Question # 1

The reaction in which the products can recombine to formreactants are called.

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Reversible Reaction

Irreversible reactions

Decomposition reactions

Addition reactions

Atoms achieve stability by attainign electonic configuration of.

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Alkali metals

Coinage metals

Inert Gases

Alkaline earth metals

Molecular mass of Acetic Acid

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70 amu

43 amu

60 amu

80 amu

In an irreversibel reaction equiirbrium is.

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The forward reaction will be fovoured

No effect on forward or backward reaction

No effect on bakcwars reaction

The backward reaction will be favoured

Allotropes of oxygen are

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2

3

4

5

Number of electronsin nitrogen molecule is.

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2

4

6

8

Which of the following contains oxalic acid

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Orange

Sour Milk

Tomato

Tamarind

Empirical formula of hydrogen peroxide.

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HO

CO

CHO

CH

Caustic chemical drain cleaner are captable of dissolving.

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Hair

Food

Grease

All of these

To Identify the concentration of a particular solution through titration is and application of.

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astrochemistry

analytical chemistry

geochemistry

Organic chemistry

When new bonds ae formed, the energy is

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Consume

Remain same

Release

None of these

Arrhenius put forward acid base concept in.

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1878

1786

1787

1790

The gas used by animals to perform respiration.

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O₂

N₂

SO₂

Cl₂

The colour of litmus paper in strong acidic solution.

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Red

Blue

Yellow

Colourless

These are safe source of food and energy for body during emergency.

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Proteins

Vitamins

Carbohydrats

Lipids

Which one is not an Arrhenius base?

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NaOH

KOH

Ca(OH)₂

NH₃

Which one of the following is manufactured by Solvar's process:

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caustic soda

washing soda

urea

sulphuric acid

Which gas is also known as life gas for plants.

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CO

CO₂

O₂

NO₂

A bound formed between two amino acids is:

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Peptide linkage

Covalent bound

Hydrogen bound

Glycosidic linkage

For reactions having large Kc value, the reaction proceeds to:

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Completion

Equilibrium state

back ward

None of these

General formula of Alkyl radical is..

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-1

C_nH_2n-2

Which of the following is reducing sugar?

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Glucose

Maltose

Sucrose

Starch

One of the following substances does not undergo sublimation

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KMnO₄

Naphthalene

NH₄CI

Iodine

The concept of distribution of velocities among the gas molecules was given by.

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Clausius

Mexwell

Boltzmann

Vander waal

Which molecule has sG2 hybridization.

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CH4

C2H4

C2H2

C2H5

Which one of the following inter molecular forces are present in neon gas molecules.

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Hydrogen bond

dipole -Dipole attraction

London dispersion force

Hydrogen bonding and London dispersion force

The molal boiling point constant is the the ratio of the elevation in boiling point to.

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Molarity

Molality

Mole fraction of solvent

Mole fraction of solute

Which properties of liquid is measured by polarimeter

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Conductance

Refractive index

Optical activity

Change in volume

Photosynthesis a photochemical reaction has order of reaction

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0

1

2

Fractional order

The tendency of an tom to attract shared pair of electron towards itself is called its.

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Ionization energy

Electronegativity

Electron affinity

dipole moment

The boiling point of water at the top mount Everest is.

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59^oC

69^oC

83^oC

75^oC

A molecular orbital can accommodate maximum electron

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2

6

8

10

The number of molecules in one dm³of water is close to

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Ecosystem is smaller unit of

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Lithosphere

Hydroshpere

Amosphere

Biosphere

Dolomite is a carbonate of

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Be

Mg

Na

Ba

The nature of lysine amino acid is

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Acidic

Basic

Amphoteric

Natural

----------- compound shows extensive hydrogen bonding with water

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C₂H₆

H₂S

C₂H₅OH

CH₃Cl

Which form interstitial compounds.

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Fe

Ni

CO

All of those

The percentage of clay and liem stone in cement is in the ratio of.

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1 : 1

1 :2

1:3

3:1

Which one of the following Lipids does not have glycerol backbone.

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Cholesterol

Oil

glycogen

Vitamin D

The composition of white lead is

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PbCO3.Ph(OH)2

PbCO3.2Pb(OH)2

2PbCO3.Pb(OH)2

PbCO3

The state of hybridization in ethene molecule is

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dsp²

sp³

sp²

sp

The IUPAC name of CH3OCH6H5 is

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Methyl phenyl ether

Methaoxy benzene

Phenoxy methane

methoxy phenyl

An ester can be prepared by the reaction of.

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Two alcohols

Alcohol and an aldehyde

An alcohol and an organic acid

an acid and a ketone