Question # 1

The attractive forces which exist between ionic compounds and water molecules are

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dipole-dipole forces

ion diopole forces

istantaneous dipole-induced dipole forces

dipole-induced dipole forces

Leaching of nutrients is due to

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Drying of soil

Combustion of soil

Acidification of soil

Neutralization of soil

The solubility product is only applicable for those substance whose molar concentrations is

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0.01

Equal to 1

Less than 0.01

Greater than 10

The formation of acetic anhydride from acetic acid follows the mechanism

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SN

AN

SE

AE

CuSO₄5H₂O crystals belong to

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triclinic

cubic

tetragonal

orthorhombic

Inside every fluorescent lamp there is present a:

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Gas

Plasma

Liquid

Solid

When a nitrogeneous base combine with a sugar it is called

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Ribose

Nucleotides

Nucleoside

None

Equal volumes of all gases at STP contain equal no of molecules is called

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Dalton's law of partial pressure

Graham'a law of diffusion

Avogadro's law

None

The film forming components of paints are

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resins

thinners

pigments

driers

A covalent bond may be

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100% covalent

Partial ionic

100% ionic

Both a and b

The volume of gas depends upon the------- moleules

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Size of

Space between

Molecular weight

both a and b

Group VIB of transition elements contains

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Zn, Cd, Hg

Fe, Ru, Os

Cr, Mo, W

Mn, Te, Re

Which of the substances Na, Hg, S Pt and graphite can be used as electrodes in electrolytic cells having aqueous solution?

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Na, Pt and graphite

Na and Hg

Pt and graphite only

Na and S only

Which one of following is not monocyclic aromatic hydrocarbon

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Benzaldehyde

Benzoic acid

Benzene sulfonic acid

Biphenyl

Which of the following geometry is associated with the compound in which the central atom assumes sp³d hybridization?

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Planar

Pyramidal

Angular

Trigonal bipyramidal

Which statement is true for Na and Na⁺

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Size of Na is smaller than Na⁺

Size of Na is greater than Na⁺

Both have same properties.

Both have equal sizes.

The pH of the rain water in areas where acid rain is the cause of pollution may be

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6.5

5.6

4.5

2.2

Alkanes are least reactive towards:

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Acids and bases

Reducing agents

Oxidizing agents

All of these

Which of the following molecules have sp³hybridized carbon

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CH₄

C₂H₄

C₂H₂

CO₂

Which of the following acts as ligand

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NH₃

NH₂-- CH₂-- CH₂-- NH₂

C₂O^2-₄

All these

Acid rain is due to increase in atmospheric concentration of

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Ozone and dust

CO₂and CO

SO₃and CO

SO₂and NO₂

The function of salt bridge in the galvanic or voltaic cell is to

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Carry out oxidation at anode

To carry out reduction at cathode

Carry out electrolysis

To prevent the net charge accumulation in either of the half cells

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