Question # 1

Which of the following is not a sub-atomic particle

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Electron

Proton

Neutron

Deuteron

Which of the following cannot be produced by acidic dehydration of alcohols?

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Ethers

Aldehyde

Alkyl Hydrogen sulphate

Alkene

Bohr model of atom is contradicted by:

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Planck's quantum theory

Pauli's exclusion theory

Heisenberg's uncertainty principle.

All of above.

Homologues differ from each other by an integral number of

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CH₂groups

CH₃groups

CH groups

CH₄groups

When acetic acid and ethanol react together an ester is formed which is called

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Ethyl ester

Ethanoic acid

Ethyl acetate

The covalent radius of Cl atom is:

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99.4 pm.

176.7 pm

38 pm

76 pm.

Which one of the following is a product of the reaction between C₆H₅CH₂OH and CH₃COCI

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C₆H₅OCOCH₃

C₆H₅CH₂CI

C₆H₅CH₂OCOCH₃

C₆H₅CH₂COCI

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

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H₂/Ni

H₂/Pt

NaBH₄

LiAIH₄

which one of the following is a heteroheneous catalysis

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The malt-sugar in the presence of yeast or invertase gives

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Fructose

Glucose

Lignin

Alcohol

Copolymer is

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Nylon-6

Nylon 66

PMMA

Polyethene

Octane number can be changed by

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Isomerisation

Alkylation

Cyclisation

All of these

The state of equilibrium refers to

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State of rest

Dynamic state

Stationary state

State of inertness

Cyanohydrin of which of the following forms lactic acid

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HCHO

CH₃COCH₃

CH₃CHO

CH₃CH₂CH₂CHO

DNA is a polynucleic acid. The monomer is known as a nucleotide. What is not the component of the nucleoptide

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Phosphate group

Deoxy ribose sugar

Uracil base

Adenine base

In Lucas test teriary alcohol make an oily layer

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Immediately

In 10 mins

On heating

Not

Which is used as an antifreeze?

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Glycol

Ethyl alcohol

Water

Methanol

To get DDT, chlorobenzene has to react with one of the following compound in the presence of conc.H₂SO₄

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Trichloroethane

Dichloroacetone

Dichloroacetaldehyde

Trichloroacetealdehyde

The lA elements are called

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Alkaline earth metal

Alkaline metals

The halogens

The inert gases

Which element among the following belongs to Group IV-A of the periodic table?

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Barium

Iodine

Lead

Oxygen

Commercial common salt becomes slight damp on storing because

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Common salt is hygroscope

Common salt contains some impurity, which is hygroscopic

Salt in efflorescent

Salt is crystalline

Antibonding MO is formed by

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Addition of atomic orbitals

Substraction of atomic orbitals

Multiplication of atomic orbitals

None of these

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

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7f.

7s.

7p.

7d.

The final product formed by distilling ethyl alcohol with excess of Cl₂and Ca(OH)₂is

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CH₃CHO

CCl₃CHO

CHCl₃

(CH₃)₂O

Electrons in degenerate orbitals are placed in separate orbitals with same spin according to

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Hund's rule

Pauli exclusion principle

Aufbau principle

Mosley's law

n + l value for 4f will

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2

5

7

9

When electrically is passed through molten Al₂O₃+ Na₃AlF₆and 13.5 gms of Al are deposited, the number of farady must be

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0.5

1.0

1.5

2.0

In the hydrolysis of CH₃COOC₂H₅the acid produced is

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Inhibitor

Catalyst

Auto catalyst

None of above

Compounds X, Y and Z, all react with PCI₅to release hydrogen chloride, but only one of them reacts eith 2,4-dinitrophenylhydrazine reagent. Which one of the following combinations could be X, Y and Z

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Toluene can be oxidized to benzoic acid by

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KMnO₄(alk)

K₂Cr₂O₇(acidic)

Both

None

Al is the most element in earth crust:

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O

Si

Al

Pb

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