Chemistry - Questions and Answers, General Study (GK)

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81.

Glasses and Plastics are

(a)Amorphous solids

(b)Super cooled liquids

(c)Both A and B

(d)None of these

Comment

Answer is: CNA

82.

H2O is a liquid and H2S is a gas because

(a)Oxygen forms stronger hydrogen bond than sulphur

(b)Oxygen is less electronegative than sulphurs

(c)Atomic radius of oxygen is less than that of sulphur

(d)Atomic radius of oxygen is greater than that of sulphur

Comment

Answer is: ANA

83.

Which one among the following would expand the most on being heated?

(a)Water

(b)Air

(c)Alcohol

(d)Glass

Comment

Answer is: BNA

84.

Which one of the following is used as an anti-freezer, which effectively depresses the freezing point of water in an auto-mobile?

(a)Ethylene glycol

(b)Propanoic acid

(c)Glutamic acid

(d)Glycolic acid

Comment

Answer is: ANA

85.

An ideal gas is one which obeys

(a)Gas law

(b)Boyle's law

(c)Charle's law

(d)Avogadro's law

Comment

Answer is: ANA

86.

Air at sea level is found to be dense. This is in accordance with

(a)Boyle's law

(b)Charle's law

(c)Dalton's law

(d)Avogadro's law

Comment

Answer is: ANA

87.

Silica in amorphous form is used in

(a)Photovoltaic cell

(b)Conductivity cell

(c)Standard hydrogen electrode

(d)None of the above

Comment

Answer is: ANA

88.

On increasing pressure, melting point of ice

(a)Decreases

(b)Increases

(c)Remain unchanged

(d)Changes in regular manner

Comment

Answer is: ANA

89.

Effect of temperature on viscosity is given by

(a)Hole theory

(b)Arrhenius theory

(c)Adsorption theory

(d)Collision theory

Comment

Answer is: ANA

90.

Unit of viscosity is

(a)Poise

(b)Dyne/cm

(c)Joule/m2

(d)Joule

Comment

Answer is: ANA

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Chemistry - Questions and AnswersPage 9

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