Question # 1

One of the following is not a biopolymer. Point out that one

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Lipid

Starch

Diamond

Protein

The oxidation of 1 - propanol in the presence of H2SO4, +K2Cr207 produces final product

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Acetaldehyde

Propanal

Acetone

Propanoic acic

Plastics are a pollution problem because may plastics:

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burn to produce toxic fumes

decompose to produce tocxic products

are made from petroleum

are very inflammable

Which of the following equation is for idea gas:

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PV = dRT

PR = nTP

PM = nRT

PV = nRT

The strongest conjugate base is

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OH-

CH3O-

C6H5O-

CH3COO-

At ordinary temperature, the most nearly ideal gases are

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N₂

He

H₂

all these

CFCs destroy ozone layer, How many ozone molecule a chlorine free radical can destroy:

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50,000

100,00

20,000

10,000

H2O and HF are the hydrides of the second period. Fluorine is more electronegative than oxygen. Anyhow, the boiling point of water is greater than that of HF. This is due to:

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water is more polar than HF

water has a bent structure

HF has a zig zag structure after making hydrogen bonding

the number of hydrogen bonds produced by water are greater than that of HF

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will not cause water pollution

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live stock waste

agricultural pesticides

oil beaks and spills

all of the above

The increase in reaction rate as a result of increase in temperature from 10K to 90K is

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512

256

400

112

Dissolved impurities of potable water can be separated by the process of

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reduction

Aeration

Electrolysis

Co-angulation

The percentage of H is the highest in

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CH₄

NH₃

H₂SO₄

C₆H₁₂O₆

Dipole moment of CO molecule is:

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0.0

1.112 D

0.112 D

2.112 D

Formaline Contains ______% alcohol

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80

37

8

52

Which of the following compounds will react with Tollen's reagent

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Which of the following is fully fluorinated polymer?

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Neoprene

Teflon

Thiokol

PVC

Lactic acid on heating with dil. H₂SO₄gives

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Acetic acid

Propionic acid

Acrylic acid

Formic acid

Quantity of heat evolved or absorbed during the reaction is measured according to the equation

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If acetyl chloride is reducing in the presence of BaSO₄and Pd, then

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CH₃CHO is formed

CH₃CH₂OH is formed

CH₃COOH is formed

CH₃COCH₃is formed

d-block elements are also called :

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alkali metal

Alkaline earth metals

Transition elements

Electron deficient elements

Vitamin A is present in

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Liver

Milk

Green vegetables

All

Which one of the followings is a heterocyclic compound

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Cyclohexanol

Phenol

Pyridine

Anthracene

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