Question # 1

A fat or oil is characterized for extent of unsaturation by one of the following number. Which one is

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Acid number

Saoilucfucation number

Rancidity number

Iodine number

Transportation causes to produce CO₂ in atmosphere:

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72%

73%

74%

75%

The temperature at which volume of ideal gas is hypothetically zero is called

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Absolute zero

0°C

OK

Both a and c

The heat of reaction depends upon

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Temperature of the reactants

Physical states of the reactants and the products

Both A) and B)

Path of the reaction and the temperature

Which substances do nto react immediately with bromine water:

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ethane

benzene

ethene

phenol

According to Boyle's law at constant temperature, the product of pressure and volume of a given mass of gas is:

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a constant

fraction

whole number

a multiple

At constant volume, for a fixed number of moles of a gas the pressure of the gas increases with size of temperature due to

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increase in average molecular speed

increase in number of moles

increase in molecular attraction

decrease in the distance between the molecules

Catalyst used for ammonia synthesis is

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Cu

Co

Zn

Fe

SO₂makes ___________ acid rains

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carbonic acid

Sulfuric

Nitric acid

All of these

H₂O is liquid at room temperature whereas H₂S is a gas because

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H₂O used as drinking water, but H₂S has rotten egg smell

H₂O is neutral. H₂S is a weak acid

stronger hydrogen bonding in H₂O than in H₂S

H₂O occurs abundantly than H₂S

Which of the following is Homopolymer

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Polyvinyl acetate

Acrylic resin

Polyester resins

Both A and C

How does the ionization energy of 1st group elements vary?

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Increases down the group

Decreases down the group

Remains unchanged

Variation is not regular

6-d series is in the period :

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4th

5th

6th

7th

A compound containing carboxyl group in them are called:

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Ketone

Ether

Carboxylic acids

Polycarboxylic acid

Chemical composition of colemnite is:

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Ca₂B₆O₁₁.5H₂O

CaB₄O₇ .4 H₂O

Na₂B₇O₇. 4 H₂O

CaNaB₅O₉.8H₂O

What is the structure of the ester formed from propanoic acid and ethanol

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Alcohol can be denaturated by adding:

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Acetone

Methanol

Pyridine

All

Atmosphere thickness is (in km) around the earth:

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10 km

100 km

1000 km

1500 km

The detection of functional group is called:

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Numerical analysis

Qualitative analysis

Quantitative analysis

Combustion analysis

The degree of polarity of molecule is known as its

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Dipole moment

Moment arm

Bond energy

Ionic character

In a group, the ionization energy

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Increase

Decreases

Remain constant

First increases then decreases

IIB elements (Zn, Cd, Hg) and III B elements (Sc, Y and La) are

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Non typical transition element

Typical transition element

Normal elements

Inner transition element

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