Question # 1

D-block elements are also called

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Non-typical transition element

Outer transition elements

Abnormal transition elements

Inner transition

The total number of lattice arrangements in different crystal system is

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7.0

3.0

8.0

14

A fat or oil is characterized for extent of unsaturation by one of the following number. Which one is:

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acid number

saoilucfucation umber

rancidity number

iodine number

Which one among the following is not a natural polymer?

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protein

cellulose

nylon

nucleic acid

The transition temperature of tin is

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95.5 C°

13.2 C°

13.2°C

128.5°

Catalyst used for ammonia synthesis is

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Cu

Co

Zn

Fe

By increasing the concentration of reactants, the rate of reaction

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Decreases

Increases

Remains constant

Not predicted

The dehydration of ethyl alcohol with concentrated H2SO4 at 140°C gives

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Ethene

Alcohol

Diethyl ether

Carboxylic acid

Whenever a reaction is endothermic, then it means that

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Heat is transferred system to the surrounding

Heat is transferred from surrounding to the system

Heat content of the products is less than that of reactants

Heat content of the reactants is greater than the products

chemist was able to measure the value of lattice energy of KCI to be 690 kj/mol.

From this experiment , he concluded that:

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lattice energy of KBr is 665 kj/mol and that of Ki is 630 kj/mol

lattice energy of KBr is 765 kj/mol and that of Kl 730 kj/mol

lattice energy of KBr is 730 kj/mol and that of Ki 765 kj/mol

lattice energy of KBr is 630 kj/mol and that of kL 665 KJ/mol

When a metal rod is dipped in its one molar ionie solution

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Electricity is produced

Electricity is consumed

Redox reaction occurs

Potential difference is set up

Hydrogenation of vegetable oils is accelerated by Ni catalyst. The catalytic activity of Bi is increased by a promoter of activator which is

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Na and K

Na and Hg

Hg and Zn

Cu and Te

The solubility product of AgCl is 2.0 x 10^-3 mol² dm^-6 , The maximum concentration of Ag ion in the solution is :

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2.0 x 10^-10 mol dm^-3

1.41 x 10^-10 mol dm^-3

1.0x 10^-10 mol dm^-3

4.0x 10^-10 mol dm^-3

The filtration process is used to to separate solid from :

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Liquid.

Gas.

Solid.

All of above.

Elements in which f-orbitals are in the process of completion are called

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Outer transition element

Inner transition elements

Non-tranistion elements

Radioactive elements

When electrically is passed through molten Al₂O₃+ Na₃AlF₆and 13.5 gms of Al are deposited, the number of farady must be

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0.5

1.0

1.5

2.0

Rutherford's experiment led to the discovery of

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Nucleus

Electron

Proton

alpha particle

Metallic conduction is due to the

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Movement of electrons

Movement of ions

Both a and b

None of these

The solid remained on filter paper during the filtration is called the :

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Substance.

Residue.

Undue.

Filtrate.

Alcohols are named by replacing 'e' of alkane with:

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al

ene

ol

one

Minamata disease is due to pollution of

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Organic waste into drinking water

Oil spill in water

Industrial waste containing mercury into fishing water

Arsenic into the atmosphere

The quality of petroleum is determined by

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Decane number

Octane number

Nexane number

None of these

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