Question # 1

Electron affinity depends on

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Atomic size

Nuclear charge

Atomic number

Atomic size and nuclear charge both

Polysaccharides are also called

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Crystals

Sugars

Liquids

None sugars

What is chrome yellow?

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Pbo

Pb₂O

PbCrO₄

Pb₃O₄

Two solutions of NaCl and KCl are prepared separately by dissolving 0.1 M of the solute in water. Which of the following statements is not true for these solution

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KCl solution will have higher boiling point than NaCl solution

Both the solutions have same boiling

KCl and NaCl solution possess same vapour pressure

KCl solution possess same freezing point at NaCl solution

Which of the following mixture of liquids show negative deviation form Raults law

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Ethyl alcohol and ether

HCI and water

Phenol- water

Chlorobenene-bromobenene

NO and NO₂gases in atmosphere are represented by

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NO

NO₄

NO_x

N_xO_y

Which of the following compounds does not react with NaHSO₃?

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C₆H₅CHO

Acetophenone

Acetone

Acetaldehyde

Alkanes have functional group :

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----X

--OH

----COH

No functional group

Coordination number of Pt in [PtCl (NO²) (NH³)⁴]^2-

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2^-

4

1

6

Which colour is imparted by sodium

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Yellow

Violet

Red

Crimson

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0.073

0.147

0.05

0.026

Which element belong to 5d series

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V

Nb

Pd

Hf

Which decolourizes the colour of Br₃

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CH₄

CH_3-CH₃

CH_3-CH_3-CH₃

CH₂₌CH₂

It rate law of an equation is written asdx/dt=K[A][B] ?

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Reaction is independent of the concentration of A and B.

Product is decreasing with passage of time.

Reactant in increasing with passage of time.

Reactant is increasing with passage of time.

Which statement is not correct

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Enzymes catalyst a specific reaction

Enzymes show catalytic activity at a specific temperature

The catalytic activity of enzymes is stopped if optimum pH is changed

The catalytic activity is poisoned by a co-enzymes

In Lucas test primary alcohol make as oily layer

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Immediately

In 10 mins

On heating

Not

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-778.9 KJ

788.0 KJ

-1.9 KJ

+1.9 KJ

The rate of reaction is denoted by

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dc/dp

dc/ac

dc/dT

dc/dt

Nitration of phenol gives

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o-nitrophenol

p-nitrophenol

m-nitrophenol

Both o and p-nitrophenol

In 1000 molecules of 0.001 M acetic acid the number of H⁺ions is 12.6, then its percentage of ionization is

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1.33%

1.26%

12.6

1%

Rate of chemical reaction depends upon :

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The number of total collisions per second.

Number of molecules taking part in a chemical reaction.

Number of fruitful collisions per second

Number of fruitless collisions per second.

The rate of reaction :

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Increase as the reaction proceeds.

Decreases as the reaction proceeds.

Remains the same as the reaction proceed.

May decrease or increase as the reaction proceeds.

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Proton donar

Dehydrating agent

Catalyst

Electrophile

Grignard's reagent is

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Alkyl halide

Magnesium halide

Alkyl magnesium halide

Ethereal solution of an alkyl halide

Chromium (VI) is highly toxic and can cause

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Blindness

Cancer

Liver problems

Blood problems

Which metal of Group-II A of the periodic Table, will form the least ionic chloride

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Be

Mg

Ca

Sr

95% alcohol is called

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Rectified spirit

Spirit of wine

Spirit

Methylated

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Complete conversion of A to B has taken place

Conversion of A to B is only 50% complete

Only 10% conversion of A to B has taken place

The rate of transformation of A to B is just equal to rate of transformation of B to A in the system

Which of the following is not a fatty acid

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Propanoic acid

Acetic acid

Phthalic acid

Butanoic acid

Generally the bond formed by metals with non-metals is

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Ionic

Covalent

Polar

Non- polar

Which of the following is a carbonate are?

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Pyrolusite

Malchite

Diaspore

cassiterite

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