Question # 1

Which one increases by common ion effect except?

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Crystallization

Solubility

Association of ions

All of these

Covalent bond is

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A weak bond

A true chemical bond

A hydrogen bond

Responsible for secondary structure of protein

Consider the following reaction
R-CHO + 2Ag(NH3)2OH + R-COONH+ +2Ag+2NH3+H2OThis reaction represents

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Fehling test

Ninhydrin test

Benedict lest

Tollen's test

Which of the following activates phosphatase enzyme

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Ca²⁺

K⁺¹

Mg²⁺

Zn²⁺

Deep sea divers take oxygen with:

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A heavy gas

A lighter gas

An inert gas

All of above

How much quantity of water is in the domestic use

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0.08%

16%

24%

90%

coordination number of N^a+ in NaC is:

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1

2

4

6

Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of:

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2 days

5 days

6 days

7 days

Keeping in view the charge density select the compound amoung the following having highest lattic energy:

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LiBr

KCI

MgO

NaF

Which one is more toxic?

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Fe

C

Hg

Ag

Adipic acid and Hexamethylenediammine polymerize to give

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Acrylic resins

Plastic fiber

Nylon-6, 6

None

The vapour pressure of two liquids 'p' and 'Q' are 80 and 60 torr respectively. The total vapour pressure of solution obtained by mixing 3 mole of P and 2 mol of Q would be

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140 torr

20 torr

68 torr

72 torr

A compound of the formula C₄H₁₀O_{reacts with sodium and undergoes oxidation to give a carbonyl compound which does not reduce Tollen's reagent, the original compound is}

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Diethyl ether

n-Butyl alcohol

Isobutyl alcohol

sec-Butyl alcohol

Solutions with same osmotic pressures are called

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Hypertonic

Hypotonic

Isotonic

Normal

Covalent compounds are soluble in

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Polar solvents

Non-polar solvents

Concentrated acids

All solvents

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

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Live stock waste

Agricultural pesticides

Oil breaks and spills

All of the above

Alkynes normally have ______ hybridization

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Sp

Sp²

SP³

d sp³

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NH₃ HCl

KCN in C₂H₅OH NaOH

KCN in C₂H₅OH HCl

HCN NaOH

The filtration process is used to separate solid from

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Liquid

Gas

Solid

All of above

A reaction is reversible because :

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Products are stable.

Reactants are reactive.

Products are reactive.

Reactants re stable.

Which compound shows more hydrogen bonding?

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C₂H₆

C₂H₅Cl

CH₃----O----CH₃

C₂H₅OH

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

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