Question # 1

In an electrochemical series, elements are arranged on the basis of

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pH scale

pKa scale

pOH scale

Hydrogen scale

Sponification is the hydrolysis of fats or oil with an:

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alkali

base

enzyme

metallic ion

The diffusion of gasses at absolute zero will be:

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Slightly decrease

unchanged

Slightly increased

Zero

Which of the following statements about amorphous solids is incorrect?

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They melt over a range of temperature

They are anisotropic

There is no orderly arrangement of particles

They are rigid and icompressible

The number of Cl- ions per unit cell of NaCl are

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6

4

2

8

If similar groups are attached to the same side, of C=C of alkene then it is

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Cis isomer

Trans isomer

Tautomer

AIl

Point out that which is not an application of liquid crystals?

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Source of energy

In display of electrical devices

For skin thermography

As temperature sensor

Common names of carboxylic acids are given by then:

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Source

Person discovered

Place

Habit

Which of these polymers is a synthetic polymer?

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animal fat

starch

cellulose

polyester

Water which forms scum with soap is called

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Hard water

Soft water

Distilled water

Un distilled water

Air contains 78% N₂, 21% O₂ and 1% other gases at sea level the partial pressure of O₂ is

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760 torr

159 torr

592 torr

7.6 torr

The heat of formation of SO₂(g) is -70.9 Kcal. The energy required for the decomposition of 1 mole of SO₂(g) is

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35.50 Kcal

70.9 Kcal

141.8 Kcal

-35.9 Kcal

Which is the derived lipid?

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Common fats

Vitamin-D

Common oils

Spinolipids

Industrial alcohol may be denaturated by the addition of

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Methyl alcohol

Acetone

Pyridine

Any of the above reagent

Which of these polymers is a synthetic polymer?

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Animal fat

Starch

Cellulose

Polyester

Which of the following is hypnotic?

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Acetaldehyde

Metaldehyde

Paraldehyde

None

A reaction in which an atom or a group of atoms replaces an atom or a group of atoms in the molecule of a substance is known as

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Addition reaction

Condensation reaction

Elimination reaction

Substitution reaction

The development of disagreeable odur in fats or oil is called

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Fragrance

Perfume

Rancidity

Smell

1-butene an 2-butene are an example of

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Chian isomerism

Positional isomerism

Metamerism

Functional group isomerism

How is the secondary structure of protein stabilized

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Through hydrogen bonding

Through ionic bonding

Through van der wall forces

Through covalent bonding

The acid present in the stings of bees and wasps in

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Acetic acid

Formic acid

Formalin

Formaldehyde

Which compound shows hydrogen bonding

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C₂H₆

C₂H₅CI

CH₃-O-CH₃

C₂H₅OH

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