Question # 1

The unit of pressure ______ is commonly used by meteorologists

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mm of Hg

Kilopascal

Millibar

Pound per square inch

Which is the following would have most like an ideal gas at room temperature?

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carbon dioxide

helium

hydrogen

nitrogen

The standard reduction potential of Zinc is

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0.76V

0.34

-0.34V

-0.76V

Cholestryl benzoate tums into milky liquid at

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140°C

145°C

148C°

149°C

Which one of the following enzymes brings about the hydrolysis of fats?

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urease

maltase

zymase

lypase

State of hybridization of carbon in the carbocation is

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sp3

sp

sp2

dsp2

On adding NH3 to water

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lonic product will increase

[H3O+] will inerease

lonic product will decrease

[H3O+] will decrease

One kilo calorie is equal to

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4.184J

1000J

4184J

1kJ

If the volume term is present in denominator of Kc expression, then which one is correct

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Increase in pressure will shift the reaction backward

Increase in pressure will shift the reaction forward direction

Decrease in volume will shift the reaction forward direction

Reaction will not effected

Which of these polymers is an addition polymer?

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nylon 6,6

polystyrene

terylene

epoxy resin

Which one of the following is a water soluble vitamin?

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niacin

riboflavin

tyrosine

ascorbic acid

When metallic sodium in ether is heated with ethyl chloride, which alkane is formed

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Propane

Ethane

Iso-butane

N-butane

The rate of reaction :

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Decreases as the reaction proceeds

Increases as the reaction proceeds

May decrease or increase reaction proceeds

Remains same as the reaction proceeds

Cotton is an example of

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Animal fibre

Mineral fibre

Vegetable fibre

Synthetic fibre

The unit of rate constant is the same as that of the rate of reaction in :

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First order reaction.

Second order reaction.

Zero order reaction.

Third order reaction.

Vegetable oils are

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Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Glyccerides of saturated fatty acids

Essential oils obtained from plants

Which have better penetrating power

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Alpha rays

Beta rays

Gamma rays

X-rays

Alkaline earth metals posses two electrons in their outermost

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F-orbital

D-orbital

S-orbital

P-orbital

Boiling point of acetic acid is ^oC

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116

117

118

119

To prepare ethanol by fernentation the optimum temp. is

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10 - 20°C

25 - 30°C

20°C

35°C

The elements of sub-group A are called

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Transition elements

Main elements

Typical elements

Rare earth elements

Which of the hydrogen halides has the highest percentage of character?

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HCl

HBr

HF

Hl

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