Question # 1

Which of the following contains I mole of the stated particles

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Chlorine molecules in 35.5 g of chlorine gas

Electrons in 1 g of hydrogen gas

Hydrogen ions in 1 dm³ of 1 mol dm¯³ aqueous sulfuric acid

Oxygen atoms in 22.4 dm³ of oxygen gas at STP

ln ethyl alcohol, the bond that undergoes heterolytic cleavage most readily is

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C-C

C-O

C-H

O-H

Which one of the following element is not present in all proteins?

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carbon

hydrogen

nitrogen

sulphur

Elements of group IV-A are

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neither strongly electropositive nor strongly electronegative

strongly electropositive

strongly electronegative

none of these

Denaturation of protein means the structure of protein is disrupted indicate which factor does not denature protein

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Oxidizing agent

Heat protein

Keeping pH 7.35

pH changes

Which is inorganic polymer?

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Plastic

Rubber

synthetic fiber

Lipids

Which one of the following is an aromatic compound?

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Benzene

Thiophene

Furan

All of them

The distribution of energies among the molecules of gases was studied by:

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Maxwell

Coulomb

Newton

Boltzmann

Which of the following does not represent a type of crystal system

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Triclinic

Monoclinic

Rhombohedral

Isotropical

Which of the following polymer has application in paper industry

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Starch

Glycogen

Protein

All

Gases show uniform behavior towards their:

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Internal conditions.

External conditions.

Internal and external conditions.

None of above.

The rate constant k of a reaction activation energy Ea and temperature are related by Arrhenius in the form of an equation which is

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Self linkage of carbon to produce long chains

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isomerism

Polymorphism

Polymerization

Catenation

An organic compound has the following properties ; It gives a positive tri-iodomethane test; it gives a yellow ppt, with 2, 4-DNP regent; it does not react with Tollen's reagent . Which compound would give these results

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CH₃CHO

CH₃CH₂OH

CH₃CH₂COCH₃

CH₃CH₂CH₂CHO

Metal tend to lose electrons, becoming:

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Metals

Positively charged

Negatively charged

(a)And (c)

The basic difference between synthetic and natural fertilizer is in their

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Rae material

Crop application

Usage

Shapes

How many are the zones through which the charge passes in a rotary kiln?

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4

3

2

5

Generally electron affinities for elements in a period from left to right

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Decreases

Increases

Remain same

Increases alternatively

Which one of the following is a colligative property?

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Surface tension

Osmotic pressure

Viscosity

Refractive index

In the ground state, an element has 13 electrons in its M shell. The element is

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Copper

Chromium

Nickel

Iron

Which one of the following statement is wrong regarding differences between aldehydes and ketones

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Aldehydes undergo reduction to form primary alcohols while ketones undergo reduction to form secondary alcohols

Aldehydes undergo oxidation to form acids having less number of carbon atoms while ketones undergo oxidation to form acids having same number of carbon atoms

Aldehydes give positive silver mirror test while ketones give negative -mirror test

Aldehydes can undergo polymerization while ketones cannot undergo polymerizarion

NaHCO₃is prepared by

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Down's process

Solvay's process

Nelson's process

None of these

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