Question # 1

Polypeptides are formed from amino acids by

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Oxidation

Addition

Condensation

Reduction

What is the reason of ionic solids for not conducting electricity?

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free electrons are less

ions don't have translatory mention.

ions don't have translatory mention

the coordination number of the ion is very high.

Which of these polymers is a synthetic polymer

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Animal fat

Strach

Cellulose

Polyester

Buffer action can be explained by except

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Common ion effect

Le-Chatelier's principle

Law of mass action

Solubility product

Which of the following element will have strongest van der Waal force of attraction between its molecules?

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nitrogen

hydrogen

oxygen

chlorine

Pressure remaining constant at which temperature the volume of a gas will become twince of what it is at 0∘C.

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546∘C

200∘C

546K

273K

In which of the following compounds H-binding is not present?

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ethanol

ether

water

ammonia

Which one the following is not postulated in the kinetic molecular theory of gases

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molecules of all the gases have same size and same mass

molecules are in chaotic motion

all molecular collisions are elastic

the volume of the molecules is negligible

lonization of KCIO3. is suppressed by

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Increasing temperatuse

adding KCl

adding NaNO3

Decreasing temperature

Air at sea level is dense.This is a practical application of

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Boyle's law

Charle's law

Avogadro's law

Dalton's law

Chemicals used to kill pests are:

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Herbicides

Insecticides

Pesticides

fungicides

______ is called milk of magnesia

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NaOH

KOH

LiOH

None

During a chemical reaction heat may be

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absorbed

Evolved

Both evolved and absorbed

None of these

Charge of an electron is:

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1.6 x 10^-19 C

9.1 x 10^-34 C

1.7588 x 10¹¹ C

6.62 x 10^-34 C

Which of the atoms has 1s², 2s², 2p_x²2p¹_y2p¹_zconfiguration

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Nitrogen

Carbon

Fluorine

Oxygen

Glass calorimeter reaction is one which we measure

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Enthalpy of combustion

Enthalpy of reaction

Pressure volume work

None of above

Enzymes are chemically

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Carbohydrates

Proteins

Fatty acids

Phospholipids

The liquid obtained after passing the mixture through filter paper is termed as:

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Extract

Residue

Filtrate

Sample

Ozone in most of the tropical regions acts as a pollutant and causes

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Damages to eyes

Aggravates asthma

Chest discomfort

All of these

In primary alkyl halides, the halogen atom is attached to a carbon which attached to how many carbon atoms?

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Two

Three

One

Four

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High temperature

Low temperature

Low pressure

High pressure

The number of atoms or molecules whose concentrations determine the rate of the reaction is called

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Molecularity

Order

Rate of reaction

Rate constant

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