Question # 1

Which one is not an Arrhenious acid?

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HCl

H2SO4

CO2

HNO3

When new bonds ae formed, the energy is

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Consume

Remain same

Release

None of these

Which one of the following is heterogeneious mixture.

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Milk

Ink

Sugar solution

Milk of magnesia

Molecular mass of Acetic Acid

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70 amu

43 amu

60 amu

80 amu

The colour of hydrated copper (II) sulphate solid is.

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Black

Pink

White

Blue

Platinum alloyed with which metal is used as catalyst in automobiles as atalytic covertor.

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Gold

Rhodium

Palladium

Both a and b

In an irrversibel reaction equilibrium

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Never establised

Established quickly

Established slowly

Established when reaction stops

Empirical formula of acetic acid (CH3COOH) is

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CHO

CH

CH2O

None of these

²³⁸U₉₂ has number of neutrons.

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92

146

238

330

Period nuber of ²⁷ Al ₁₃ is

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1

2

3

4

Which among of the followign has a double covalent bond.

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Ethane

Methane

Acetylene

Ethylene

At equilibrium state there are possibilities: OR types of chemical equilibrium are.

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1

2

3

4

Cause of diarrhoea among following is:

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Diarrhea

Cholera

Cryptosporidium

Typhoid

Latin word 'Acidus' means:

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sweet

salty

sour

bitter

Arrhenius presented his concept about acids and bases in.

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1785

1787

1923

1930

The order of reactivity of hydrogen halides with alkenes is:

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HI>HBR

HBr>HI

HCl>HBr

HBr>HCl

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

The value of constant of ionic product of water Kw at 25 C.

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1.0 x 10^-4

1.0 x 10¹⁴

1.0 x 10^-4

1.0 x 10⁴

Monosaccharide consists of number of carbon atoms.

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2 to 4

4 to 8

3 to 9

5 to 10

The percentage of ocean in world water is.

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50%

67%

97%

25%

Permanent hardness can be removed by using .

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Soda lime

Sodium Zeolite

Quick lime

Lime water

When acid reacts with sulphites and Bi sulphates which gas is evolved?

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H2

CO₂

SO₂

NH₃

If absolute temperature of the gas is doubled and the pressure is reduced to one half the volume the gas will.

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Remains uncharged

Increase four time

Reduce to 1/4

Be doubled

Fuel cells are the means by which chemical energy may be converted into

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Heat energy

Magnetic energy

Sound energy

Electric energy

Which process is endothermic and spontaneous

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Neutralization of NaOH with HCl

Formation of NH3 from H2 and N2

Formation of H2O from H2 and O2

Evaporation of sea water

Unit of rate constant is the same as that of the rate of reaction in

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2nd order reaction

3rd order reaction

Zero order reaction

1st order reaction

Electrolysis is used for

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Electroplating

Refining of copper

Manufacture of caustic soda

All of the above

A solution of glucose is 10% to volume in which 1 g mole of it is dissolved will be

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1 dm³

1.8 dm³

200 cm³

900 cm³

Isotopes differ in.

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Properties which depend upon mass

Arrangement of electrons in orbitals

Chemical properties

None of these

Safe and reliable method of drying crystals is through.

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Pressing it between folds of filter paper

Drying it in oven

Evaporation of solution

Vacuum desiccator

If we want to change O₂to O₂^-1The electron is to be placed in

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If four moles of sulphur dioxide are oxidized to sulphur trioxide, how many moles of oxygen are needed.

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0.5

1.0

1.5

2.0

Which element has highest ionization potential

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Li

Na

K

Rb

The avoid teh formation of toxic compounds with chlorine which substance is used for disinfecting water.

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KMnO4

O3

Alum

Chloramines

The strength of binding energy of transition elements depend upon

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number of electron pairs

number of unpaired electron pairs

number of neutrons

number of protons

Which one is basic amino acid

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Lysine

Alanine

Glycine

Aspartic acid

Which one of the following proteins transports oxygen in blood stream.

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Insulin

Albumin

Hemoglobin

Globulin

Formula of marsh gas is

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CH₄

C₂H₆

C₃H₆

C₄H₁₀

-SH Functional group is called

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Cyano

Mercapto

Nitro

Carboxyl

Boric acid cannot be used

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As antiseptic in medicine

For washing eyes

In soda bottles

For Enamals and Glazes

Lead monoxide is

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Amphoteric

Neutral

Acidid

Basic

Which enzyme is not involved in fermentation of starch.

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Diastase

Zymase

Urease

Invertase

Chlorine heptoxide (CI₂O₇) reacts with water to form

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Hypochlorous acid

Chloric acid

Perchloric acid

Chlorine and oxygen

Which reagent is used to reduce a carboxylic group to an alcohol

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N₂/ Ni

H₂/Pt

NaBH₄

LiAIH₄