Question # 1

Following are state of matter.

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Liquid

Solid

Gas

All of these

Emperical Formula of Glucose is

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CH2O

CHO

CHO2

C2HO

The electropositive elements have the tendency to

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Lose electrons

Gain electrons

Share electrons

All of these

Acidic Acid is used for

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Cleaning metal

Etching designs

Flavouring food

Making explosives

The branch of chemistry that helps to treat dseases and synthesize new medicines.

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Physical Chemistry

Environmental Chemistry

Organic chemistry

Inorganic chemistry

Nitrogen molecule contains.

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Polar covalent bond

Triple Covalent bond

Double covalent bond

Single covalent bond

Which of the following is a heterogeneous mixture

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Concrete mixture

a solution of potassium nitrate in water

a solution of calcium hydroxide in water

Hot chocolate

The boiling point of water is

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O ^oC

100 ^oC

35 ^oC

25 ^oC

All the noble gases have their valence electrons.

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Incomplete

Partialy filled

Completely filled

None of the above

Which is not produced in an aerobic respiration.

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Carbon dioxide

Lactic acid

Water

Energy

Aerobic respiration releases........energy than anaerobic respiration.

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Equal

Less

More

None of these

Acid reacting with metal sulphides, liberate gas.

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Oxygen

Hydrogen

Hydrogen Sulphide

Hydrogen Oxide

Condensed formula of ethane is

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C₃Cl₈

C₂Cl₆

H₃CCH₃

None of these

Which one gas is liberated when alkalies react with ammonium salts?

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O₂

CO₂

H₂

NH3

Law of Mass Action was put forward by:

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G.N.Lewis

Lowry

Arrhenius

Gulbderg and Waage

Methyl butanoate smell like.

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Apple

Mange

Lemon

Grapes

Which gas is also known as life gas for plants.

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CO

CO₂

O₂

NO₂

Main component of natural gas is

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Methane

Propane

Butane

Propene

The two major components of atmosphere are:

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Hydrogen and oxygen

Nitrogen and Hydrogen

Nitrogen and oxygen

Oxygen and water.

Such reactions which continue in both directions are called.

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Irreversible

Reversible

Nonreactive

Dynamic

Which is the substitution reaction in the following?

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Halogenation of alkenes

Halogenation of alkynes

Bromination of alkene

Halogenation of alkanes

Triglycerides are fatty acids.

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Unsaturated

Saturated

Both of them

None of them

Which has greater reduction potential

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Na

H2

Zn

F2

The nature of copper crystals is

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Metallic

Ionic

Covalent

Molecular

Electrochemical series is the arrangement of the electrodes in

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Increasing order of reduction potentials

Decreasing order of reduction potentials

Increasing order of oxidation reduction potential

There is no fixed arrangement

Tin has isotopes.

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9

10

11

12

Down the VII -A group, polarizability generally.

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Increases

Decreases

Remain constant

Negligible

18 g of glucose is dissolved in 90 g of water. The relative lowering of vapour pressure is equal to

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1/5

5.1

1/51

6

The carbon atom is C2H4 is.

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sp3 hybridized

sG2 hybridized

Sp hybridized

dsG2 bybridized

The shape of Sncl2 molecule is.

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Linear

Angular

Trigonal planar

Tetrahedral

Spectrum produced due to the transition of electron from M-Shall to L-Shell is.

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Absorption

Emission

Continuous

X rays

Which one of the following substances is not amorphous

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Polymer

Rubber

Glass

AgNO₃

Stronger the oxidizing agent, greater is the

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oxidation potential

Reduction potential

Redox potential

E.M.F of cell

The conversion of ethene to ethanol is an example of.

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Hydration

Dehydration

Neutralization

Esterification

In water the concentration of dissolved O₂should be

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1-3 ppm

2-4 ppm

4-8 ppm

8-12 ppm

In a period, from left to right in the periodic table, the size of atom generally.

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Increases

decreases

Remains constant

First increase upto the middle of period and then decreases

Zwitter ion is

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Dipolar ion

Amino acid with two amino groups

Amino acid with two carboxylic acid group

A synthetic amino acid

Disinfection of water by chlorine is done by the production of.

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NH2Cl

NCl2

HOCl

NHCl2

Raney Nickel is

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Nickel compound

Naturally occurring nickel

Spongy form of a nickel

Alloy of nickel

Which is not polymer

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Diamond

Starch

Sand

Nucleotide

The amount of free fatty acid in fats and oil is determined by

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Iodine number

Acid number

Saponification number

Gold number

Which one of the following substances have garlic odour and a colourless gas.

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CH3OH

HCOOH

CH2=CH2

HC= CH

Acetic acid manufactured by

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Distillation

Fermentation

Ozonolysis

Esterification

The process in when alkene are converted into carboxylic acid is known as

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Oxidation

Reduction

Hydrolysis

Hydration