Question # 1

Which of the following compounds will react with reagent ?

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CH₃ CO H

CH₃ CO CH₃

CH_{3 COOH}

CH₃CO CH₂CH₃

Coordination number of Pt in [Pt Cl(NO₂) (NH₃)]^2-is

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2-

4

1

6

Number of sigma bonds in P₄O₁₀is

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6

7

17

16

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High temperature and low pressure

Low temperature and high pressure

Low temperature and low pressure

High temperature and high pressure

When a nitrogeneous base combine with a sugar it is called

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Ribose

Nucleotides

Nucleoside

None

The unit of rate of reaction is

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mole dm^-3

mole Kg^-1

moles dm^-3sec^-1

grams dm^-3

For which mechanisms, the first step involved is the same:

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E₁ and E₂

E₂and SN₂

E₂ and E₁

E1 and SN₁

Protein are classified into

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Simple protein

Complex protein

Derived proteins

All of these

One kilocalrie is equal to

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4.184 x 10³J

4.184 x 10⁴J

4.184 x 10²J

None of these

The lA elements are called

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Alkaline earth metal

Alkaline metals

The halogens

The inert gases

First atomic theory was put forward by an English school teacher:

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Maxewell

Newton

Sanger

John Dalton

Formaline Contains ______% alcohol

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80

37

8

52

Given data

(i) heat of formation of CO₂is -393.7 KJ mole^-1

(ii) heat of formation of H₂O is -285.8 KH mole^-1

(iii) heat of combustion of CH_{4 is -890.00 KJ mole}^-1

Enthalpy of formation of methane from C and H₂is calculated by Hess's law by

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Adding i + ii + iii

Adding 2(i) and ii and subtracting iii

adding i + iii and subtracting ii

Adding i + 2(ii) and subtracting iii

Which of the following metal requires radiation of highest frequency to cause emission of electrons?

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Na

Mg

K

Ca

The solutions of NaCl and KCl are prepared separately by dissolving same amount of solute in water, which of the following statements is true fro these solutions ?

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KCl solution will have higher boiling point than NaCl solution.

Both the solutions have same boiling points.

KCl and NaCl solutions possess same vapour pressure.

KCl solution possesses lower freezing point than NaCl solution.

Ionization is the process in which ionic compounds when fused or dissolved in water split up into charged particles called :

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Atoms.

Electrons.

Protons .

Ions

Ammonia like water also reacts with Grignard's reagent to give

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Alkane

Alkene

Alkyne

Amide

Which of the following is commonly called polyamide

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Nylon

Rayon

Terylene

Oridon

Ecology is a science of environment and deals specially with

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Stratosphere

Biosphere

Lithosphere

Hydrosphere

Which of the following fibres are made of polyamides?

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Dacron

Orlon

Nylon

Rayon

Reaction of Grignard's reagent with formaldehyde gives:

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pri-alcohol

sec-alcohol

ter-alcohol

carboxylic

Kolb's method is not useful for the production of

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Methane

Ethane

Propane

Butane

According to the periodic law, the chemical properties of the elements are periodic functions of their

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Density

Atomic number

Atomic mass

Mass number

An electric current is passed through silver voltameter connected to a water voltmeter. The cathode of the silver voltameter is 0.108 g more at the end of the electrolysis. The volume of oxygen evolved at STP is

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56 cm³

550 cm³

5.6 cm³

11.2 cm³

Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y are respectively

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Zinc dust and soda lime

Soda time and zinc dust

Zinc dust and sodium hydroxide

Soda lime and copper

The elements with atomic numbers 9, 17, 35, 53, 85 an all

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Noble gases

Halogens

Heavy metals

Light metals

Glycine at pH7 has the structure

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H₂N -- CH₂-- COOH

H₃N⁺-- CH₂-- COOH

H₂N -- CH₂COO^-

H₃N⁺-- CH₂-- COO^-

Which of the following gives iodoform on heating with a solution of I₂containing Na₂CO₃?

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Ethyl alcohol

Acetone

Ethyl alcohol as well as acetone

Methyl alcohol

The correct order of 2nd l.P. of C,N,O and F is

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O > F > N > C

O > N > F > C

C > N > O > F

F > O > N > C

Ethanal may be converted into a three-carbon acid in a two-step process.

Which compound is the intermediate

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CH₃CO₂H

CH₃CN

CH₃CH₂CN

CH₃CH(OH)CN

Catenation is a process in which carbon shows the properties of making

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Multiple bonds

Hybridization

Long chains or rings of carbon atom

Showing isomerism

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