Errorless chemistry and etea engineering 2018 paper

ETEA ENGINEERING 2018

1) Wire A has the same length and resistance as wire B. the diameter of A is double that of B. what is the ration of the resistivity of wire A to that f wire B?

(a) 1 : 2 (b) 4 : 1 (c) 1 : 4 (d) 2 : 1

2) Three resistors of resistance 2 W, 4 W and 6 W are connected in parallel across a D.C supply. The ratio of the current through tho 2 W resistor to the current through the 4 W resistor is

(a) 1 : 2 (b) 2 : 1 (c) 1 : 4 (d) 1 : 6

3) If required conditions are provided, which compound on reaction HOCl will not follow markownikkol’s rule:

(a) CH₃- CH = CH - Br

(b)

(c)

(d)

4) The number of Chiral center in the compound given below is/are:

(a) 2 (b) 3 (c) Zero (d) 1

5) An alkyne that gives alidehyde on hydrolysis with water under proper conditions is:

(a)

(b)

(c)

(d) None of the above

6) When Ahmad reached home last night, his family _______ their dinner

(a) Would have eaten (b) had eaten

7) The series

can be expressed as,

(a)

(b)

(c)

(d)

8) A line

will be tangent to parabola

if _______?

(a)

(b)

(c)

(d)

9) If det (A^-1) 5, then det (A) =

(a) 5 (b) – 5 (c)

(d)

10) A particle moves along a curve with position vector

then its speed for t – 2sec, will be:

(a)

(b)

11) A ball iron, mass 1 kg, is dropped from the top of the building. The ball reaches the ground 5s. what is the velocity, in m/s, of the ball when it strikes the ground?

(a) 150 ms^-1 (b) 99 ms^-1 (c) 49 ms^-1 (d) 27 ms^-1

12) A girl sitting on a spinning bar stool with her legs folded, suddenly outspreads them, Her angular velocity will:

(a) Decrease (b) Increase (c) Remain the same

(d) First increase and then decrease

13) Two force having magnitudes 3.5 N and 5.5N are acting on a body. Which one of the following cannot be the resultant of their possible sum?

(a) 1.5 N (b) 2.5 N (c) 4.5 N (d) 6.5 N

14) Thermal stability is related to the polarizing power of the cation in the compound. Which of the following compounds having cation with a strong polarizing power?

(a) MgCl₂ (b) AlCl₃ (c) LlCl (d) BaCl₂

15) Compound having the ability of showing inert pair effect is

(a) …….. (b) …….. (c) …….. (d) All of the above

16) Which of the reactant pair you think, gives …. reaction?

(a) ….. (b) ….. (c) …… (d) …….

17) Which one of the following term is not related for pollution?

(a) Noise (b) air (c) radiation (d) none of the above

18) The compound of Cr(Chromium) with a strong reducing power is

(a) ….. (b) ….. (c) …… (d) None of the above

19) Most of the student are keen _____ their studies.

(a) in (b) on (c) of (d) all of the above

20) The domain of f(x)= sec x is

(a) (0,1) -

(b)

(d)

21) Which function obaes Euler’s theorem directly.

(a) tan^-1

(b) sin

(d) In

22) If sum of even coefficient in the exparsion of (1+x) is 256. The of n is

(a) 7 (b) 8 (c) 9 (d) 10

23) The first law of thermodynamic is a statement which implies that

(a) No heat enters or leaves the system

(b) The temperature remains constant

(d) Energy is conserved

24) A generator produces 100KW of at a potential difference of 10KW. The power is transmitted through cables of the total resistance 5W. How much power is dissipated in the cables?

(a) 50W (b) 250W (c) 500W (d) 1000W

25) If a hole is bored through the center of the earth and a pebble is dropped in it, then it will

(a) Stop at the center of earth

(b) Drop to the other site

(c) Execute SHM (d) Fall with a constant velocity

26) A body in equilibrium must not have

(a) Kinetic energy (b) Velocity

27) The oxidation and reducing agents nrespecitvely in the reaction given below are

H₂S+2FeCl₂®2FeCl₂+2HCl+S

(a) S²⁺.Fe³⁺ (b) Fe³⁺.S¹⁺ (c) Fe³⁺.S²⁺ (d) S².Cl^2-

28) The orbital with highest energy is

(a) Hybrid (b) Non-Hybrid

29) The melting point of S crystalline solid by the addition of impurities

(a) Increases (b) Decreases

30) The teacher said to the students. “you can go out for5 a short break”

[Choose the correct indirect speech]

(a) The teacher asked the students to go out for a short break.

(b) The teacher slowed the students to go out for a short break.

(d) The teacher ordered the students to go out for a short break.

31) If G₁, G₂, G₃, G₄ are four geometric means between an and b, then (G₁, G₂, G₃, G₄)⁴ = _______?

(a) (G)⁴ (b) (G)^1/4 (c) (G)²¹(d) (G)¹⁶

32) Which of the following ordinary differential equation in non-linear.

(a)

(b)

(c)

(d)

33) Let f(x)

the domain of f⁺¹ (x) is

(a) …… (b) …… (c) …… (d) ……

34) If the momentum of a body decreases by 20% the percentage decrease in K.E will be:

(a) 44% (b) 36% (c) 28% (d) 20%

35) An object traveis at constant speed around a circle of ratius 1.0 m in 1.0 s. What is the magnitude of it’s acceleration?

(a) Zero (b) 1.0 ms^-2 (c) 2p ms^-2 (d) 4p² ms²

36) A source contains initially N₂ nuclel of a radioactive nuclide. How of these nuclel have decayed after a time interval of three half-lives?

(a) N₆/8 (b) 2N₆/3 (c) N₆/3 (d) 7N₆/8

37) Satellites revolve around the earth in a circular orbit. What is the relationship between the radil r of their orbits and the orbital speeds?

(a)

(b)

(c)

(d)

38) The unpaired electron in the molecule of NH₃ is:

(a) 0 (b) 1 (c) 2 (d) 3

39) Choose the one that cannot be classed as buffer system.

(a)

(b)

(c)

(d)

40) White phosphorous catch fire spontaneously in air forming mixture of oxides Select the correct oxides

(a)

(b)

(c)

(d)

41) Saqib was arrested and charged ______ murder.

(a) into (b) on (c) with (d) near

42) Let an oblique triangle ABC dimensions a = 30 b = 70 and b = 85

Then for finding “a”, we use ______?

(a) Sine Law (b) Cosine Law

43) The n¹⁶ term of A.P in the series 1 + 4x + 7x⁶ …..

(a) 3n + 2 (b) n + 1 (c) n + 3 (d) 3n – 2

44) The sum of infinite arithmetic …… series is:

(a) ..... (b) ….. (c) ….. (d) …..

45) x = 0, is the solution of the inequality

(a) x > 0 (b) 3x + 4 < 0 (c) 2x + 3 < 0 (d) x – 2 < 0

46) What is represented by the gradient of a graph of force F (vertical axis) against extension x (horizontal axis)?

(a) Elastic limit (b) Spring constant

47) The minute hand of a large clock is 3.0m long. What is its mean angular speed?

(a) 1.4 x 10^-4 rad s^-1 (b) 1.7 x 10³ rad s^-1

48) If a stationary electron is subjected to a uniform magnetic field it will be

(a) Accoierated in the direction of field it will

(b) Caused to move in a circular path

(d) Unaffected

49) Alkene that do not follow cis-trans isomerism is:

(a) But-2-ene (b) 1 chloropropene

50) 2-Bromopropene on reaction with C₂H₅S thio alcohol under goes

(a) Elimination reaction (b) Substitution reaction

51) The oxidation number of carbon in

is:

(a) + 4 (b) – 4 (c) – 2 (d) Zero

52) He said, “I do not want to see any of you, go away”.

[Choose the correct indirect speech:]

(a) He said that he did not wish to see any of you and go away

(b) He said that they did not wish to see any of us and went away

(d) He said that he did not wish to see any of them and ordered them to go away

53) Which test of the following would you suggest to distinguish between the compounds?

and

(a) Baeyer’s reagent (b) Lucas reagent

54) Choose the correct sentence.

(a) The new Sultan, entitled to four wives prefer, monogamy.

(b) The new Sultan, entitled to four wives, preference monogamy.

(d) The new Sultan, entitled to four wives, prefers monogamy.

55) Choose the correct option for parabola,

(a) Vertex (2, -1), opens upward

(b) Vertex (2, 1), opens downward

(d) Vertex (2, 1), opens upward

56) The co-efficient of middle term in the expansion of

(a)

(b)

(c)

(d) None of the above

57) The major axis of the ellipse

(a) Parallel to

(b) Parallel to

(d) On

58) Two electrically neutral materials are rubbed together. One acquires a net positive charge. The other must have:

(a) Lost electrons.

(b) Gained electrons.

(d) Gained protons

59) If 1ng of mass converts into energy, how many joules of heat will be generated?

(a) 3 x 10^-3J

(b) 3 x 10³J

(d) 9 x 10⁴J

60) When the light from two lamps falls on a screen, no interference pattern can be obtained. Why is this?

(a) The lamps are not point sources

(b) The lamps emit fight of different amputation

(d) The light form the lamps is white

61)

(a)

(b)

(c)

(d)

62) For a square matrix

, the condition

and

hold for:

(a) Diagonal matrix (b) Unit matrix

63) Three bulbs of rating 60 W, 80 W and 100 W are connected in series to work on 240 V, which bulb will glow most brightly

(a) 60 W (b) 80 W

64) The Sl unit of magnetic flux density is:

(a) N A^-1 m (b) N A^-1m² (c) N A m^-2 (d) N A m

65) An electron volt is a unit of

(a) Electric potential (b) Charge

66) “The energy change in a closed cycle from initial to final state is zero”. This statement is obeyed by:

(a) Born Haber cycle

(b) Law of conservation of energy

(d) All of the above

67) Chrome plating is related to:

(a) Daniel cell (b) Voltaic cell

68) X – rays with lowest energy is:

(a)

(b)

(c)

(d)

69) Altruistic

[Choose the correct meaning:]

(a) Unselfish concern for the welfare of others

(b) Avoiding disturbance

(d) Artistic tendencies

70) The fourth derivative of

(a)

(b)

(c)

(d)

71) Which compound with the given information has greater mass in kg?

(a) 22.4 dm³ N₂ at STP

(b) 1 mole of CO

(d) All have equal mass

72)

MrKClO₃=122.5 g/mol

For the production of 33.6 dm³ of O₂ at STP the mass of KClO₃to be decomposed is:

(a) 245.0 g (b) 61.25 g

73) All are anisotropic at room temperature except:

(a) CCl₄

(b) AgNO₃

(d) BaCO₃

74) For an average man it is very hard to earn bread and butter in many countries.

[Choose the correct meaning of the underlined idiom:]

(a) Meals (b) Livelihood

75) The n^th term formula for 2, 3, 5, 6, 11, ……..is ?

(a) 2n – 1 (b) 2n + 1

76) For the inequality 2x – 5y ³ 10, the intercepts are?

(a) (5, -2) (b) (5, 2)

77) If

are the three non-zero vectors, then the expression

is:

(a) Scalar triple product

(b) Volume of parallelepiped

78) The maximum kinetic energy of photoelectrons emitted depends upon:

(a) Intensity of incident light

(b) Frequency of incident light

(d) None of the above

79) The range of the function,

(a)

(b)

(c)

(d)

80) The graph of of y – ………………

(a) x – axis (b) y – axis

81) What is the magnitude of the …… momentum of particle of its ……. Wavelength is 0.02 …..?

(a) 0.5 h (b) 50 h

82) A photon is

(a) A charged particle (b) An electron-positron pair

83) The gravitation field strength on the surface of the Earth is g. the gravitational field strength on the surface of a plant of thrice the radius and the same density it:

(a) 5 g (b) 6 g (c) 3 g (d) g/ 9

84) Regarding liquificaiton of gases, the brightest critical temperature at a fixed pressure is of:

(a) SO_3(g (b) NH_3(g)

85) A student dissolved 50.5g KNO₃

(KHO3 = 101.0 g/mol) in 1000 g distilled water and allowed to boil. The solution started boiling at:

(a) 100.52

C (b) 100

C (d) KNO₃ insoluble in water

86) At temperature of –10

C which one doesn’t behave the property of molecular crystal among the following is:

(a) Phosphorous (b) Water

87) The hunter’s fatal accident ______ in the newspaper yesterday.

(a) is reported (b) will be reported

88) The slope of the tangent at each point on the graph is definitely measured by:

(a)

(b)

(c)

(d)

89) The correct option of 5!

is:

ii)

iii)

(a) i only (b) ii only

90) A themistor is a semiconductor device whose resistance.

(a) Decreases as its temperature increase

(b) Doesn’t vary as its temperature increase

(d) Doesn’t vary as its temperature decrease

91) A medical lab has a 16 g of sample of radioactive isotopes. After 6 hours it was found that 12 g of sample have decayed. The half-life of the isotope is:

(a) 12 hours (b) 6 hours (c) 2 hours (d) 3 hours

92) The total energy input E_m is partly transferred to useful energy output U, and partly to energy that is wasted W. what is the efficiency of the process?

(a) (U/W) x 100 % (b) (W/E_m) x 100 %

93) (CH₃)₃ C – CH₂ – Br cannot undergo elimination reaction with alcoholic KOH. It is because:

(a) Alcoholic KCH is not a good choice

(b) It is tertiary alkyl halide

(d) There is no b- hydrogen in the compound

94) The electronics configuration of titanium is

1S²2S² 2P⁴3S² 3P⁶ 4s² 3d²

Which titanium compound unlikely to exist?

(a) K₂ TiO₄

(b) K₃ TiF₆

(d) TiO

95) Brome ethane on reaction with KCN gives compound “x”. The compound “x” on reduction with Hydrogen (nascent) gives:

(a) CH₃ – CH₃

(b) CH₃ – CH₂ – CH₂ – NH₂

(d) CH₃ – CH₂ – CH₂ – NO₂

96) To make a clean breast of something means:

(a) To do the cleaning

(b) To carefully avoid a trouble

(d) Both (a) & (b)

97) I have seen the teacher outside the class this morning.

[Choose the correct voice]

(a) The teacher has seen me outside the class this morning

(b) The teacher have been seen outside the class this morning

(d) The teacher has been seen by me outside the class this morning.

98) If the initial approximation is

, then for which of the following function Newton’s Raphson is applicable:

(a)

(b)

(c)

(d)

99) If ABC is an equilateral triangle with side “C” then its area is

(a)

(b)

(c)

(d)

100) Which pair of lines have a single point of intersection?

(a)

(b)

(c)

(d) None of the above

101) What is the circumference of a circle whose area is 100 π?

(a) 10 π (b) 20 π (c) 10 (d) 20

102) The number of significant figures in the measurement of 5.005 x 10^-3 s is,

(a) 2 (b) 3 (c) 4 (d) 5

103) A student measures a current as 0.5A. Which of the following correctly expresses this result?

(a) 50 mA (b) 50 MA (c) 500 mA (d) 500 MA

104) Which electronic Transition is associated with propanal by absorbing uv/visible radiations?

(a) n ® s⁴ (b) n ® p⁴ (c) p ® n⁴ (d) s ® s⁴

105) In magnetic field the charge at rest experiences

(a) no force (b) maximum force

106) Two bodies with kinetic energies in the ratio of 4 : 1 are moving with equal linear momentum. The ration of their masses is

(a) 1:2 (b) 1:1 (c) 4:1 (d) 1:4

107) The solubility of Ag₂Cr₂O₇ at 25

C was 2.0 x 10^-5 M. its K_sp value is

(a) 3.2 x 10^-14 (b) 4.0 x 10^-10

108) The specie with strongest conjugate base in aqueous solution among the following is

(a) Hl (b) HNO₃ (c) CH₃COOH (d) HClO₄

109) Higher the activation energy for a reaction

(a) Slow is the rate of reaction

(b) Fast is the rate of reaction

(d) Activation energy is no related to the rate of reaction

110) You cannot pup the ocean dry.

[Choose the correct voice]

(a) The ocean cannot be dry pump by you

(b) You cannot dry the ocean by pumping

(d) The ocean cannot be pumped dry by you

111) For the approximate root of f(x) = 0 in [a, b], n is necessary that

(a) f (x) is continuous & f (a) > 0, f (b) > 0

(b) f (x) is continuous & f (a) < 0, f (b) < 0

(d) f (x) is continuous & f (a) > 0, f (b) < 0

112) Angle of rotation for removing “xy” term from conic equation is:

(a)

(b) f (x) is continuous & f (a) < 0, f (b) < 0

(d) f (x) is continuous & f (a) > 0, f (b) < 0

113)

114)

115) The prefix “term” stands for

(a) 10⁶ (b) 10⁴ (c) 10³ (d) 10¹²

116) The force “F” on a charged particle “q” moving with velocity “v”, parallel to magnetic field “B” is given by

(a) F=qvB (b) F=qE (c) F=0 (d) F=1LB

117) The magnitude of horizontal component of a force 10N is 6N. the magnitude of its vertical component is

(a) 10N (b) 4N (c) 8N (d) 12N

118) Select hydrogen carbonate with is comparatively most stable thermal composition.

(a) NaHCO₃ (b) KHCO₃ (c) RbHCO₃ (d) CsHCO₃

119) Methane thiol and ethane is added to the natural gas

(a) To make combustion of natural gas very easy

(b) To increase the boiling point

(d) Both a and c

120) Which of the following reactants when react produce ester?

(a) CH₃CH₂– OH and PCl₃

(b) CH₃COOH and CH₃– O – CH₃

(d) CH₃OOH and CH₃CHO

121) “Disdain”

[Choose the word with opposite meaning]

(a) Haughtiness (b) Erroneous

122) Choose the correct option for the line x=8, and circle x² + y² – 6x – 4y – 12 = 0

(a) Touch each other

(b) Intersect each other

(d) None of the above

123)

(a) 50 (b) 0 (c) 1 (d) n

124) When equation of normal to a circle x2 + y2 = 5 is 2x – y = 0, then equation of tangent will be

(a) x – 2y = 5 (b) x + 2y = 5

125) Maths

126) If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n=2 is

(a) 10.2eV (b) 0eV (c) 3.4eV (d) 8.8eV

127) Keeping the magnetic field and velocity of the particles same, which particle will show the most?

(a) b Particle (b) α Particle (c) g rays (d) neutrons

128) In vacuum all electromagnetic waves have the same

(a) energy (b) speed (c) frequency (d) wavelength

129) The molecule of maltose sugar is given below, it bears

(a) Ether linkage (b) Peptide linkage

130) The correct order of the complete reduction of propanioc acid is

CH₃-CH₂-C-OH ……….

(a) CH₃-CH₂-C-CH₃ (b) CH₃-CH₂-CH₂-CH₃

131) Which one of the following is not a characteristic of stationary wave?

(a) Half wavelength is half the distance between the adjacent nodes.

(b) Amplitude is not the same

(d) Energy of the stationary waves travels outwards

132) The flame color of Na is yellow, Ca is brick red and Cs is apple green. Which radiation among the following travel with highest speed?

(a) Yellow (b) green (c) violet

(d) All travel with the same velocity

133) The standard reduction potential of two half cells reaction are give

(a) Cr reduces and acts as anode

(b) Fe reduces and acts as anode

(d) Fe oxidizes and acts as anode

134) The compound with highest negative ions is:

(a) NaCl (b) K₃P (c) Na₂S (d) Ca₃S₂

135) English

136) Physics

137) The integration

138) If a₁₂=x, a₂₁=y, and a₁₄=z are terms of G.P then

(a) x,y = z² (b) x,z= y²

139) The force between two charged bodies is “F”. if one of the charge is doubled and the distance between them is halved, the force acting on each charged body is:

(a) 2F (b) 4F (c) 8F (d) 16F

140) Kirchhoff’s first law is based upon law of conservation of

(a) charge (b) energy (c) mass (d) momentum

141) Physics

142) Physics

143) Physics

144) According to VSEPR theory, in which of the following molecules the electron pair geometry is pyramidal?

(a) CH₃ (b) NH₃(c) BF₃(d)None of the above

145) The passenger said to the taxi driver, “thank you” [choose the correct indirect speech]

(a) The passenger said to the taxi driver thank you

(b) The passenger said thank you to the taxi driver

(d) The passenger thanks the taxi driver

146) The multiplicative identity in the set of complex number is

(a) (0,0) (b) (0,1) (c) (1,0) (d) (1,1)

147) Phosphorous exists in nature as tetra atomic molecule. The number of atoms present in one gram molecule of phosphorus are:

(a) 6.023 x 10²³ (b) 2,6.023 x 10²³

148) When an electric current is passed through neon gas. It produces

(a) Plasma (b) light (c) both plasma and light

(d) plasma. Light and sound

149) Physics

150) Some one is knocking at the door. [choose the correct voice]

(a) The door has ben knocked at

(b) The door was knocked at by some

(d) The door is being knocked at

151) …………

(a)

(b)

152) A circle of radius 3 touch both the end of 4^th quadrant has center

(a) (3,3) (b) (-3,3) (c) (3,3)

(d) (-3,-3)

153) The expression

is valid only -----?

(a)

(b)

(c)

(d)

154) Chemistry

155) Chemistry

156) physics

157) The energy stored in the charged capacitor is given by

(a) ½ QV (b)

(c)

(d)

158) A spring obeying Hook’s law has an ……… length of 50 mm and a spring constant of 400N/m what is the tension in the spring when its overall length is 700mm?

(a) 8.0N (b) 28N (c) 160N (d) 400N

159) In a transition state the reactant are

(a) High stable (b) moderately stable

160) Choose the reagent used to test the presence of Fe…. Ions in solution with the formation of intense red color.

(a) NaSCN (b) KSCN

161) Which of the following ions contain one unpaired electron?

(a) Zn⁺² (b) K⁺¹ (c) Cu⁺² (d) Na⁺¹

162) He said. “I will pass the exam with good marks”

[Choose the correct speech]

(a) He said that he would pass the exam with good marks.

(b) he said that I would pass the exam with good marks.

(d) he told that I would pass the exam with good marks.

163) A student estimate e that the probability of passing “ETEA” test is 8/9. What is the probability of failing the test?

(a) 7/9 (b) 2/9 (c) 1/9 (d) 3/9

164)

(a)

(b)

(c)

(d)

165) Let

be a function such that

then which of the following is true

(a) Relative mini, concave down

(b) Relative max, concave up

(d) Relative mini, concave up

166) The molality of 2.0g NaOH (Mr = 40g/mol) in 250g distilled water at 4

C will be exactly equal to

(a) 0.20m (b) 0.25m (c) 1.20m (d) 0.5m

167) Neutralization is always an exothermic phenomena. Which neutralization reaction given below evolve more heat?

(a)

(b)

(c)

(d) all evolve the same heat

168) The cashier says to them, “have you counted the money”.

[Choose the correct indirect speed]

(a) The cashier told them that they have counted the money.

(b) The cashier says to them if they have counted the money.

(d) The cashier asks them if they have counted the money.

169) The derivate of the function in[cos(lnx)] is

(a)

(b)

(c)

(d)

170) The line

will be vertical, when _____?

(a) b = 0 (b) a = 0

(c)

(d)

171) Equation of a circle Centre at (-5, 4) and tangent to y-axis is;

(a)

(b)

(c)

(d)

172) Two objects of different masses falling freely form the same heights above the earth’s surface will experience the same

(a) Change in momentum per unit time

(b) Change in velocity per unit time

(d) Increase in kinetic energy per unit time

173) Which one of the following varies when an object execute simple harmonic motion?

(a) Angular frequency (b) Total energy

(c) Force (d) amplitude

174) Which of the following is the correct option for the expression ………..=

(a)

(b)

(c)

(d)

175) One factor of the polynomial

is:

(a) z + 1 (b) z – 1 (c) x + 1 (d) x – 1

176) The correct option for

is:

(a) …….. (b) …….. (c) …….. (d) ……..

177) The production of characteristic K_α x rays the electron transition is from

(a) n = 1 to n = 2 (b) n = 3 to n = 2

178) A basketball is thrown upward along a parabolic path. What is the balls acceleration wh8ile moving upward?

(a) 0g upward (b) 1/2 g, upward

179) A steam turbine is used to drive a generator. This input power to the turbine is P₁ and the output power is P₀. The power loss in the turbine is P_L as shown below

……………………..

(a) …….. (b) …….. (c) …….. (d) ……..

180) Aqueous solution of KBr was added to the aqueous solution of MgBr₂. Due to common Br equilibrium is disturbed, To reach the state fo new equilibrium which reaction will occur?

(a) …….. (b) …….. (c) Both are possible

(d) Common ion effect is not applicable to this system

181) The geometrical statement “a coincides with b or lies to the left of b” is expressed as

(a) a < b (b) a > b (c) a

b (d) a

182) The shortest distance of line ax + by + c = 0 from origin is

(a)

(b)

(c)

(d)

183) The equation of the ellipse whose foci are [

2 , 0] and eccentricity

(a)

(b)

(c)

(d)

184) A position is a gas supply pump has an area of 500cm³ and it moves a distance of 30cm during one stroke. The pump moves the gas against a fixed pressure of 4000Pa. the work done by the piston during one stroke is

(a) 60J (b) 6.0 x 10³ (c) 6.0 x 10⁵J (d) 6.0 x 10⁷

185) Atmospheric pressure is measured by

(a) Hygrometer (b) Barometer

186) A displacement time graph for a transverse wave is shown in the diagram.

The phase difference between X and Y can be expressed as mm. What is the value of n?

(a) 1.5 (b) 2.5 (c) 3.0 (d) 6.0

187) Choose the mineral considered as macronutrient and is essential for human life.

(a) iodine (b) iron (c) zinc (d) calcium

188) The lUPAC name of the compound

(a) 2 – methyl – 4 – hexane

(b) 4 – isoprophyl – 2 – butane

(d) 5.5 – dimethyle – 2 – penten

189) Which reaction do you think has highest value of K_C?

(a) H₂+l₂ « 2Hl (b) Ester + water = acid + alcohol (c) Cl + Cl « Cl₂(d) C + 2H₂ « CH₄

190) English

191) If y-f(x,y) is a function of two variables x and y then f_y will be

(a)

(b)

(c)

(d)

192) Chemistry

193) In what way do the atoms of the isotopes

differ?

(a) Different charge

(b) Different number of electrons

(c) Different number of neutrons

(d) Different number of protons

194) A body of mass 1kg is suspended form a balance in the elevator which is accelerated downward with an acceleration of 4m/s². The reaction balance will be

(a) 9.8N (b) 13.2N (c) 5.8N (d) zero

195) Work function for a certain surface is 13.25eV, Minimum frequency light must have in order to eject electron from surface will be

(a) 1.6 x 10¹¹Hz (b) 3.2 x 10¹⁵Hz

196) When light of energy 10eV falls on a metal surface of work function 8 x 10¹⁵J, the maximum kinetic energy of emitted electrons will be

(a) 5eV (b) 10eV (c) 15eV (d) 20eV

197) L mole of an ideal gas is allowed to expand from 20dm³ to dm³ against external pressure so the work done is equal to

(a) 30 atm dm³ (b) 2500 atm dm³

(b) (c) 18 atm dm³(d) 500 atm dm³

198) Compound with a greater number of hydrogen bonding is

(a) CH₃OH (b) H₂O (c) HF (d) H₂SO₄

199) Chemistry

200) English

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