Question # 1

Which of the following does give violet colour with neutral ferric chloride?

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Acetic acid

Salicaylic acid

Formine acid

Benzoic acid

Which is not a component of environment

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Biosphere

Lithospahre

Hydrosphere

None of these

Which of the following is the repeating monomeric unit in cellulose

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Sucrose

Maltose

Cellobiose

Glucose

Antibonding MO is formed by

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Addition of atomic orbitals

Substraction of atomic orbitals

Multiplication of atomic orbitals

None of these

Consider the ground state of Cr atom (Z=24). The numbers of electrons with the azimuthal quantum numbers l = 1 and l = 2 are respectively

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12 and 4

16 and 5

16 and 4

12 and 5

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According to Le-Chatelier's principal, adding heat to a solid and liquid in equilibrium will cause the

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Amount of solid to decrease

Amount of liquid to decrease

Temperature to rise

Temperature to fall

Which is more active ?

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Alkanes

Alkenes

Alkynes

Benzene

β-β- dichloroethyle sulphide is commonly known as:

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Mustared gas

Laughing gas

Phosgene gas

Bio gas

During reaction of O₂and alkenes, a product:

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Glycol

Epxide

Halohydrin

Ethylene glycol

The addition of HBr is easiest with

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CH2 = CHCl

CICH = CHCl

CH3 - CH = CH2

(CH3)2 C = CH2

Benzene is an example of

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Aromatic compound

Cyclic compound

Aliphatic compound

A cyclic compound

Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCI, are converted to

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Alkynes

Alkenes

Alkanes

Alcohol

0.5 mole of CH₄and 0.5 mole of SO₂gases have equal

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Volume

Mass is gram

Total number of atoms

Number of molecules

The detection of functional group is called

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Numerical analysis

Qualitative analysis

Combustion analysis

Quantitative analysis

Which one is not a pollutant normally?

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Hydrocarbons

Carbon dioxide

Carbon monoxide

Sulphur dioxide

In an ooctahedral crystal field splitting, the number of orbitals pushed down in energy is

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3

2

5

Zero

Identify the heterocyclic compound

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Toluene

Pyridine

Butanoic acid

Propenol

Action of Zn with alkyl halides in the presence of an inert solvent forms higher alkanes. This reaction is known as

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Wurtz reaction

Frankland's reaction

Cannizaro reaction

Kalobe's reaction

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di(4-bormophenyl) method

Methanol

Propan-1-ol

Propan-2-ol

A common industrial solvent is a mixture of propanone; CH₃COCH₃, and pentyl ethanoate CH₃CO₂(CH₂)₄CH₃. Which reagent would have no effect on this solvent

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Na_(s)

NaBH₄

NaOH_(aq)

2,4-dinitrophenylhydrazine reagent

The weight of pure NaOH required to prepare 250 cm³of 0.1 N solution is

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4 g

1 g

2 g

5 g

Unsaturated hydrocarbon containing a double bond are called

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paraffin

Alkanes

Olefins

Acetylene

The reaction between fat and NaOH is called:

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Esterification

Hydrogenolysis

Fermentation

Sponification

The solubility of KCIO₃salt in water is decreased by adding

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NaCIO₃

NaCI

KCIO₄

KCI

Aldol condensation is actually

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Electrophilic addition of carbonation

Electrophilic addition of carbonium ion

Nucleophilic addition of carbonation

Nuclephilic addition of carbonium ion

The correct order of reactivity of halogens with alkanes is

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l₂> Br₂> Cl₂> F₂

l₂> Cl₂> F₂> Br₂

F₂> Cl₂> l₂> Br₂

F₂> Cl₂> Br₂> l₂

The substance having highest conductivity at room temperature among the following is

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0.1 N HCl

0.1 N NaCl

Graphite

Glass

Preparation of vegetable ghee involves

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Halogenations

Hydrogenations

Hydroxylation

Dehydrogenations

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

Ethyl alcohol may be identified by

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Ring test

Iodoform test

Tollen's test

Bazeyer's test

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