Question # 1

The solubility of Fe(OH)3 is 'x' mole per dm3. Its Ksp would be

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9X3

3X4

27X4

9X4

The buffering property of proteins is due to the presence of

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Acidic and basic group

Hydrogen bonds

Indole group

Hyrophobic

Which of the substance is not going to react the sodium metal:

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Acetic acid

Methanol

Di methyl ether

Ethanol

Potassium crystallizes with a

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Orthogonal lattice

Cubic lattice

Triclinic

Ortho rhombic lattice

The angle between the unhybridized 2pz orbital and the three sp2 hybrid orbitals in ethene is

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180°

120°

90°

60°

Which of the following compound shows the geometrical isomerism

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2-butene

2-butyne

2-butanol

Butanol

What is the morality of a solution containing 15g of urea is 500cm³ of solution?

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1M

0.5M

2M

1.5M

Which of the following is a steroid?

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vitamin A

vitamin B

vitamin C

vitamin D

During thunderstorms, water dissolves

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Dust particles

HCl

Nitric acid

Clouds

How many times a newspaper can be recycled

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02

05

08

10

Hydrolysis of alkyl nitriles gives:

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Alkane

Alkyl halide

Alkyl nitride

Minerals acids & Alkalies

The words smog is a combination of smoke and:

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fog

foke

fork

fizzy

To prepare ethane by Wurtz synthesis the suitable alkyl halide is

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Ethyl iodide

any alkyl iodide

Ethyl chloride

Methyl bromide

.Both aldehydes and ketones are planar to the neighborhoods of carbonyl (C-0) group. Which one of the following bonds is distorted towards the oxygen atoms?

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pi-bond of C and O

Sigma bond of C and O

Sigma bond of C and H

Sigma bond of C and C

Chemistry related to the study of environment affected by the chemicals and pollutants is called:

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Biochemistry

Physical chemistry

Pharmaceutical chemistry

Environmental chemistry

Elements in the same family have

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Same atomic number

Molecular wt same

Same chemical properties

Same electronic configuration

In Millikan method for determination of charge on electron the air in the chamber is ionized by

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Protons

Electric field

X-rays

a - particles

Which is a component of micro nutrient?

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N

Zn

P

K

When of the following is isolelectronic with krypton

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Ca⁺⁺

Al⁺⁺⁺

Br^-1

I^-1

Benzene is obtained by fractional distillation of

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Heavy oil

Anthracene oil

Middle oil

Light oil

Cotton is an example of

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Animal fibre

Mineral fibre

Vegetable fibre

Synthetic fibre

Dehydration of an alcohol at 180°

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Alkene

Ether

Ester

An hydride

To calculate volume of the solvent, we need to know, the :

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Density of solute

Normality of solute

Mass of solute

Molarity of solute

A solution of glucose is of methanol in water has vapor pressure :

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Equal that of water.

Equal to that of methanol.

More than that of water.

Less than that f water.

The fourteen elements following actinium are known as

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Lanthanones

Lanthanides

Rare earths

Actinides

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

A cell in which electric current is produced as a result spontaneous redox reaction is called :

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Dry cell

Electrolytic cell

Galvanic cell

Standard cell

Which of the following are thermoplastic materials

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PVC

Polystyrenes

Polyethylene

All these

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