Question # 1

Neutrons was discovered by

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Mosely

Milliken

Chadwick

Ruherford

The solubility of KCIO₃salt in water is decreased by adding

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NaCIO₃

NaCI

KCIO₄

KCI

Aldehydes can be distinguished from ketones by

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2,4-DNPH test

NaHSO₃test

N₂H₄test

Tollen's test

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1, 5-pentadiene

Penta-1, 4-diene

1, 1-pentadiene

1, 4-pentene

A species having positive or negative charge is called:

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Electron

Ion

Proton

Atom

Aldelydes are the oxidation product of

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P-alcohols

s-alcohols

ter-alcohols

carboxylic acids

[Co(NH₃)₆]³⁺will form ______ structure

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Square planar

Tetrahedral

Octahedral

Trigonal bipyamidal

Alkanes have functional group :

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----X

--OH

----COH

No functional group

Dehydration of ethyl alcohol yields

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Aldehyde

Ketone

Acid

Alkene

B-atom in BF₃has

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sp³hybridization

sp²hybridization

sp hybridization

no hybridization

Which of the following elements is not stable:

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Xe

Ar.

Kr.

Li.

What happens when isotonic solution of A (mol.wt.342) and B (mol.wt 60) are put in to communication through semipermeable membrane?

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Transference of solvent from solution A to that of B take place

Transference of solvent from solution B to that of A takes place

No transference of solvent from solution A to that of B takes place

Change in temperature of solutions takes place

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Initial concentration of acetic acid

Initial concentration of ethyl acetate

Equilibrium concentration of acetic acid

Equilibrium concentration of ethyl acetate

Which of the following acts as ligand

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NH₃

NH₂-- CH₂-- CH₂-- NH₂

C₂O^2-₄

All these

Which of the element is not alkali metal

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Lithium

Rubidium

Francium

Magnesium

In a hydrogen-oxygen fuel cell, combustion of hydrogen occurs to

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Generate heat

Remove adsorbed oxygen from electrode surfaces

Produce High purity water

Create potential difference between two electrodes

Which of the following fluorides does not exists?

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NF₅

PF₅

AsF₅

SbF₅

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Le-chatlier's principle

Only adding catalyst

Decreasing pressure

Decreasing temperature

Benzene reacts with ozone and gives

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Glycerin

Glyoxal

Maleic anhydride

Benzoic acid

At room temperature formaldehyde is

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Gas

Liquid

Solid

None of the above

The sum of the exponents of the conc. terms in the rate equation is called

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Rate of reaction

Order of reaction

Specific rate constant

Average rate

Carboxylic acids react with acids releasing gas from it:

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H2O as steam

CO

CO2

O2

Which one of following is not monocyclic aromatic hydrocarbon

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Benzaldehyde

Benzoic acid

Benzene sulfonic acid

Biphenyl

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2-chlorobutanal

alfa-chlorobutanal

2-chlorobutyraldehyde

alfa- chlorobutyraldehyde

When initial concentration of reactants an order of reaction is given, then its half life period can be calculated by the equation

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The valence orbital configuration of an element with atomic number 23 is

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3d⁵

3d³, 4s²

3d³, 4s¹, 4p¹

3d²,4s²,4p¹

Acidic hydrolysis of acetamide gives

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Acetaldehyde

Acetic acid

Methyl amine

Formic acid

The compounds or species in search of electrons are called

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Elctrophiles

Nucleophile

Nitrities

Bases

Splitting of spectral lines when atoms are subjected to strong electric field is called:

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Zeeman effect.

Stark effect

Photoelectric effect.

Compton effect.

The amount of heat evolved or absorbed in a chemical reaction, when the molar quantities of products and reactants being the same as represented in chemical equation. is called

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Heat of reaction

Free energy of reaction

Entropy of reaction

None of these

Which one of the following substances is used to decolourizing agent

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Abestos

Animal charcoal

conc. H2SO4

Silica gel

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