Question # 1

In a compound an atom has negative oxidation state because

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Atom is negatively charged

Atom acts as cathode

Atom is more electronegative

Atom has lowest ionization energy

The element which has a simple cubic lattice in solid state is

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Se

Te

Po

None of these

Which of the following reagents is used to distinguish between methanoic acid and ethanoic acid?

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Amm. silver nitrate solution

Neutral ferric chloride

Sodium hydroxide solution

Sodium carbonate solution

Tetrabromoethane on treatment with alcoholic zinc gives

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Ethylbromide

Ethane

Ethene

Ethyne

The reagent which forms crystalline osazone derivative when treated with glucose is

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Fehling solution

Phenyl hydrazine

Benedict solution

Hydroxyl amine

The number of coulombs required for the deposition of 107.870 g of silver is

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96500

48250

193000

10000

Matter is defined as any thing which occupies space and:

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Molecules

Mass

Compound

Molecules

The reagents like KMnO_{4 and HCL cannot be filtered through Gooch crucible if its base is covered with :}

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Butterfly paper.

Ordinay paper.

Flying paper.

Filter paper.

Which of the following statement is correct for a chemical reaction to occur molecules of substances must

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Collide with each other

Collide with energy more than activation energy

Collide with energy less than activation energy

Collide with high frequency

Naturally occurring lipids are called

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Fats

protein

Steroids

None

Equal volumes of 0.1 M AgNO₃and 0.2 M NaCl are mixed. The concentration of NO^-₃ions in the mixture will be

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0.1 M

0.05 M

0.2 M

0.15 M

Aldehydes are oxidizes are to give:

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Primary alcohol

Sec-alcohol

Ter-alcohol

Carboxylic acid

Coordinate covalent bond is present in the molecules

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H₂O

BF₃

SiO₂

SO₂

Which of the following isoelectronic ions has the lowest ionization energy?

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K⁺

Ca²⁺

Cl^-

S^2-

Which of the following discoveries resulted in a version of the Mendeleefs

periodic law

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The nucleus of atom by Rutherford

The elements polonium and radium by the Curies

Atomic numbers by Moseley

x-rays by Roentgen

An alkane is produced when an alkyle halide reacts with zinc in the presence of

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HCl

CH₃COOH

Both a & b

None

Benzene hexachloride is used as

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Dye

Antimaterial drug

Antibiotic

Insecticide

Product of concentration of ions raised to the power equal to the co-efficient of ions in balanced equation for saturated solution of a salt is called

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Ionic product

Equilibrium constant K_c

K_w

Solubility product (K_sp)

The degenerate orbitals p-sub shell are

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2

3

5

7

An electron has principal quantum number 3. The number of its 1 subshell and 2 orbitals would be respectively

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3 and 5

3 and 7

3 and 9

2 and 5

A compound used as eye wash:

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Borax

Boric acid

Metabolic acid

Pyroboric acid

Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called

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Wurtz reaction

Fitting reaction

Wurtz fitting reaction

None of these

Which one of the following is not a nucleophile

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H₂O

H₂S

BF₃

NH₃

Pro stand for

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Valine

Alamine

Glycine

Proline

Which of the following is a typical transition metal?

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Sc

Y

Ra

Co

If 18 g glucose (C₆H₁₂C₆) is present in 1000 g of an aqueous of glucose it is said to be

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1 molal

1.1 molal

0.5 molal

0.1 molal

Which of the following solution have zero pH

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1 M HCI

MH₂SO₄

0.1 M HNO₃

1 M CH₃COOH

If an electrophile attacks then ______ bond breaks first

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C - H

O - H

C - O

None of these

The amount of electricity that can deposit 108 g of silver from silver nitrate solution is

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1 ampere

1 coulomb

1 faraday

2 ampere

The potassium fertilizers are preferred for horticulture, tobacco and potatones, which of the following is popular potassium fertilizer

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Potassium oxide

Potassium chloride

Potassium sulphate

Potassium nitrate

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

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