Question # 1

When we mvoe top to bottom in group, ionization energy.

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Increases

No effet

Decreases

None of these

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

Emperical Formula of Glucose is

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CH2O

CHO

CHO2

C2HO

If reversibe reaction useful for preparing compounds on large scale.

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Yes

No

They are useful only when equilirbium lies far to the left side

They are useful only when equilibrium lies far to the right side

M shell has sub sheels.

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1s , 2s

1s,2s,3s

2s,2p

3s,3p,3d

How many moels of molecules are there in 16 g oxygen.

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0.05

0.1

0.5

1

Which of the following does not happpen, when a system is at equilibrium state.

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Reaction continues to occur in both the directions

Concentration of reactants and products stop changig

Forward and reverse reactions stop

Forward and reverse rates become equal

Electronegativity of oxygen is.

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3,1

3,3

3.4

3,2

Which is strongest oxidizing agent.

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Cholorine

Iodine

Fluorine

Bromine

Aong the period which one of the followig decreases.

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Electronegativity

Ionization energy

Atomic radius

Electron affinity

How many state of matter exist.

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One

Two

Three

Four

Normally rain water is weakly acidic because of.

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SO₃ gas.

CO₂gas.

SO₂gas.

NO₂gas.

Global warming is because of.

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Absorption of infrared radiation emitted by earth surface.

Absorption of infrared radiation coming from sun.

Absorption of infrared Ultraviolet coming from the sun.

Emission of ultraviolet radiation from the earth's surface.

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

Which acid is found in sour milk?

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`Formic acid

Lacitc acid

Citric acid

Butric acid

Which one is homocyclic compound?

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Benzene

Cyclobutane

Cyclohexane

All

The body reactions are catalized by.

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Amino acids

Lipids

Enzymes

Fatty acids

Oxidation of alkenes produce.

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Glyoxal

Glycol

Oxalic acid

Formic acid

Gelatin protein is found in.

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Blood

Skin

Heart

Bones

The accumulation of which vitamin causes bone like deposits in the kidney.

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Vitamin D

Vitamin E

Vitamin B

Vitamin A

Chemical formula of Stearic acid.

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C₁₅H₃₁COOH

C₁₇H₃₅COOH

C₁₅H₃₇COOH

None of them

Cause of global warming is :

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CO₂ gas

SO₂gas

NO₂gas

O₂gas

Which molecules is 100% covalent

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H2

H2O

HF

NH3

n+1 value of 6d orbital is.

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08

09

10

18

When HCl is added to H2S aqueous solution, Its ionization

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Decrease

Increase

Remains constant

First increases than decreases

In stoichiometric calculations

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The reaction can be reversile

Side products can be formed

Law of conservation of mass may not be obeyed

Law of definite proportions is definitely obeyed

Which one of the following aqueous solutions has the highest pH

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0.1 M NaOH

0.1 M HCl

0.2 M H2SO4

0.1 M HNO3

The number of moles of CO₂which contain 8.0 g of oxygen

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0.25

0.50

1.0

1.50

A filtration process could by very time consuming if it were into aided by a gentle suction which is developed.

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If the paper covers the funnel upto its circumference

If the paper has got small sized pores in it.

If the stem of the funnel is large so that it dips into the filtrate

If the paper fits tightly

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

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

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Remain unchanged

Increase four times

Reduce to 1/4

Be doubled

Which is not decay product of free neutron

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Proton

Electron

Neutron

Antineutrino

All radio active disintegration nuclear reaction are of.

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First order

Zero order

2nd order

Third order

Which of the following element has lowest ionization energy

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Beryllium

Boron

Carbon

Oxygen

Tincal is a mineral of.

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Al

B

Si

C

In which compound, the oxidation state of boron in not +3

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H2BO3

Ca2B2O11

Na2B4O7

Mg3B2

Which acid can not be stored in glass bottles.

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HCl

HF

H2SO4

HNO3

Which one of the following enzyme is used for the treatment of blood cancer in children.

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Thrombin

Asparaginase

Glucokinase

Fumarase

Which woody raw material is used for the manufacture of paper pulp.

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Cotton

Bagasse

Poplar

Rice straw

Oxides of alkaline earth metal are

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Acidic

Basic

Neutral

Amphoteric

The quality of petroleum is determined by

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Decane number

Octane number

Hexane number

Gold number

The pH range of the acid rain is.

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7-6.5

6.5-6

6-6.5

Less than 5

Ethanol on dehydration can be changed to

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Ethene

Diethyl ether

Both 'a' and 'b'

None of these

The electrophile in Aromatic sulphonation is

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H₂SO₄

HSO₄^1-

SO₃

SO₃¹⁺