Question # 1

Alkaline phosphatese is associated with ______ disease

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Heart disease

Rickets

Diabtese

None

For reaction of methane and chlorine light is not available then

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Reaction will take place rapidly

No Reaction take place

Reaction occurs at double the rate

May all cases occur

Surface and ground water sources are contaminated by various human activities. Which of the following is not a human activity that cause contamination of fresh water?

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Rain

Oil leaks-& spills

Livestock waste

Disposal of industrial effluents

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 umber

rancidity number

iodine number

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

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SO₂

NO₂

CO

a and b only

In which system hydrogen bonding is not present

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solution of ethanol in water

linking of helix in protein molecule

structure of ice

solution of NaCl in benzene

Acetone and Chloroform are soluble in each other due to

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intermolecular hydrogen bonding

ion-dipole interaction

instantaneous dipoles

dipole-induced dipole interaction

Which element is expected to show the greatest tendency to form some covalent compounds?

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aluminium

calcium

magnesium

sodium

Substances that render enzymes catalytically inactive are called

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coenzymes

substrates

inhibitors

apoezymes

The fat soluble vitamins are:

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A and B

B and C

C and D

A and D

chemist was able to measure the value of lattice energy of KCI to be 690 kj/mol.

From this experiment , he concluded that:

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lattice energy of KBr is 665 kj/mol and that of Ki is 630 kj/mol

lattice energy of KBr is 765 kj/mol and that of Kl 730 kj/mol

lattice energy of KBr is 730 kj/mol and that of Ki 765 kj/mol

lattice energy of KBr is 630 kj/mol and that of kL 665 KJ/mol

Write the name of following compound

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5 - methyle - 2- hexene

2 - methyle hexene

4 - ethyle - 2 - methyle hexene

3 - ethyle - 3 - methyl hexene

Peat before conversion to bituminous coal is converted to

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Lignite

Anthracite

Asphalt

None

When the 6d orbital is completed the entering electron goes into

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7f

7 s

7 p

7 d

3-d series elements are present in:

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First period

Second Period

Third period

4th period

Which of the following is a typical transition metal?

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Sc

Y

Ra

Co

Smallest charge of electricity that has been measured so far is

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Charge on a-rays

Charge on electron (1.602 x 10^-19C)

Charge on x-rays

Charge on gamma rays

Which of the following is not an ortho-para directing group

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Which of the element is not an alkaline earth metal

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Beryllium

Strontium

Barium

Caesium

Units of molarity are

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gm/lit

mol/lit

kg/lit

None of these

If a reactant or product of a reaction absorbs radiation, then physical method for determining the rate of reaction is

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Spectrometry

Refractometry

Conductivity measurement

Optical method

Fluorine molecule is formed by

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The axial p-p overlap

The sidewise p-p overlap

The axial s-p overlap

The overlap of two sp²hybrid orbitals

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