Question # 1

Which one of the following is water soluble vitamin?

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Niacin

Riboflavin

Trypsin

Ascorbic acid

Which of the following does not give flame test?

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Li

Ba

Mg

Sr

The ionization energy of hydrogen atom is

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Zero

131.3kJmole

13.13kJ/mole

1313kJ/mole

The crystal system are of

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7 types

10 types

5 types

8 types

Which pair of elements have bonds of the same type between their molecules in the solid state?

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phosphorous and nitrogen

sulphur and magnesium

carbon and sodium

hydrogen and sodium

Elements of group ll-A are called

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f-block elements

s-block elements

p-block elements

d-block elements

Albumins and globulins are defined as

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Derived protein

Conjugated protein

Fibrous protein

Globular protein

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

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urease

maltase

zymase

lypase

The solubility of A2B3 is X mole dm-3. Its Ksp is?

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6X(5)

36X(5)

64X(5)

108X(5)

The reaction takes place among the molecules when they have:

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Activation energy

Properly oriented

Concentrated

Activation energy and proper orientation

Liquids are less common than solids and gases because

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They exist in narrow range of temperature and pressure

They have definite volume

Liquid molecules can slide past each other

Molecules contain three type of motion

C₂H₅CHO and (CH₃)₂CO can be distunguished by testing with

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Phenyl hydrazine

Hydroxylamine

Fehling solution

Sodium bisulphate

Alkaline battery has a voltage of

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4.5 V

3.5 V

2.5 V

1.5 V

Hydrolysis of trichloromethane with aqueous KOH gives

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Potassium formate

Acetylene

Chloral

Methanol

The number of moles of solute dissolved per dm³of the solution is called :

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Normality.

Molarity.

None of above.

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

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Fullerences

Freons

Polyhalogens

Ferrocene

The branch of science dealing with structure, composition and changes in matter and laws and principles which govern these changes is called as

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chesmistry

Geology

Physics

Mechanics

Which compound is both chiral and acidic

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The quantum number which describes the shape of the orbital is

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Principle quantum number

Spin quantum number

Azimathal quantum number

Magnetic quantum number

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Cu

H

N

O

Which is not the enzyme involved in the preparation of ethyl alcohol by fermentation of starch

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Diastase

Maltase

Zymase

Invertase

Dehydration of allcohol gives:

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Alkane

Alkene

Aldehyde

ketone

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