Question # 1

Who discovered the proton?

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Goldstein

J.J Thomson

Neil Bohr

Ruther Ford

The number of proton in an atom is called _________ number.

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Molecule

Formula

Atomic

Molar

All electrolytes are:

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Conductor

Insulator

Semi conductor

Nil

________________ is the shortest period.

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6th

8th

2nd

1st

Which shows Tyndall Effect?

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Slution

Colloid

Suspension

True solution

Which of following does not belong to p-block?

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IIIA

IVA

VA

VIB

O3, Ozone is _________ molecules.

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Homoatomic

Hetroatomic

Monoatomic

Nil

Which molecules is donor in nature?

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H₂

NH₃

O₂

HF

All metals are solid at ________________ temperature.

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Room

High

Low

None

If the solute-solute forces are strong enough than those of solute- solvent force, The solute:

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dissolves readily

does not dissolve

dissolve slowly

dissolves and precipitates

A bond formed between two non-metals is expected to be:

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covalent

ionic

coordinate covalent

metallic

Alkynes are also called.

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Olefine

Ethene

Paraffins

Acetylenes

Ethyl butanoate smells like.

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Apple

Pine apple

Lemon

Melon

The number of carbon atoms present in gasoline or petrol.

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5-10

6-10

7-10

8-10

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

Carbon content in coke is.

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80%

98%

70%

88%

The number of carbon atoms present in petroleum ether.

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1-5

2-5

3-7

5-7

Latin word 'Acidus' means:

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sweet

salty

sour

bitter

Which acid is used for etching glass?

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HF

HCl

HBr

HI

PAN stands for

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Poly aniline nitrate

Proxy acetyl nitrate

Poly acetyl nitrite

Proxy acetyl nitrite

Dehydrohalogenation take place in the presence of.

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Aqueous NaOH

Alcoholic KOH

Aqueous KOH

Alcoholic NaOH

Which is simplest alkane?

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CH₄

C₂H₈

C₂H₂

C₂H₄

Which one of the following substances is not amorphous

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Polymer

Rubber

Glass

AgNO₃

The molal boiling point constant is the ration of the elevation in boiling point to

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Molarity

Molality

Mole fraction of solvent

Mole fraction of solute

The optimum temperature for the synthesis of NH3 by Haber's process is.

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200 ^oC

300 ^oC

400 ^oC

500 ^oC

The drying agent used in a desiccator.

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Agcl

NH4Cl

P2O5

AlCl3

Bond energy depends upon

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Electronegativity

Size of atom

Bond length

All of these

The rate of diffusion of a gas is

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Directly proportional to its density

Directly proportional to molecular mass

Inversely proportional to its density

Inversely proportional to square root of its molecular mass

Pressure remaining constant, at which temperature the volume of a gas will become twice of what it is at 0 ^oC

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546 ^oC

200 ^oC

546 K

273 K

When 6d orbital is complete, the entering electron goes into.

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7f

7s

7p

7d

In azeotropic mixture showing positive deviation from Raoult's law the volume of the mixture is

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Slightly more than the total volume of the components

Slightly less than the total volume of the components

Equal to the total volume of the components

None of these

In which compound oxidation state of chlorine is +5

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NaCl

HOCl

NaClO3

NaClO2

In which system all the three axes are of equal length and all angles are at right angle.

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Cubic

Tetragonal

Orthorhombic

Hexagonal

Which one of the following is inorganic fertilizer.

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Manure

Urea

Ammonium nitrate

All of these

The anhydride of HCIO4 is

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CIO3

CIO2

Cl2O5

Cl2O7

Plastics are pollution problem because many plastics

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are made from petroleum

are very inflammable

burn to produce toxic fumes

decompose to produce toxic products

The oxides of beryllium are

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Basicity

Rancidity

Amphoteric

none of all

The reacts with halogen acids to form alkyl halide the process is known as.

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Halogenation

Hydrohalogenation

Hydrogenation

Dehydrohalogenation

The reactivity order of alkyl halides for a particular alkyl group is

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Fluoride > Chloride > Bromide > iodide

Chloride > Bromide > Fluoride > iodide

Bromide > iodide > chloride > Fluoride

Iodide > Bromide > Chloride > Fluoride

S_N2 reactions can be carried out with

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Primary alkylhalide

Secondary alkyhalide

Tertiary alkylhalide

All of these

Litharge is chemically

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PbO

PbO2

Pb3O4

Pb(CH3COO)2

-SH Functional group is called

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Cyano

Mercapto

Nitro

Carboxyl

Which one of the following compounds is a heterocyclic.

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Anthracene

Phenol

Pyridine

Aniline

Which of the following elements is not present abundantly in earth's crust.

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Silicon

Aluminium

Sodium

Oxygen