Question # 1

How many number of electrons take part in triple covalent bond?

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2

4

6

8

Which one is a solution?

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Carbonated drinks

Sugar

Benzene

Vineger

Which one is not a tetraatomic molecular?

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H2O

H2O2

SO3

BCL3

The oxidation number of chromium in K₂Cr₂O₇ is:

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+2

+6

+7

+14

Intermolecular forces are ____________ than chemical bonds.

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Stronger

Weaker

Wqual

Nil

The no. of Ion pair/pairs in ammonia molecule is / are

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1

2

3

4

The cathode of Nelson's cell is made up of

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C

Zn

Cu

Fe

Mixture has _________ types.

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3

2

1

No types

1 atm = ?

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1 pascal

760 mm of Hg

1 atm

1 Nm^-2

________________ observed that formation of covalent bonds.

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Rutherford

G.N Lewis

Both a and b

Bohar's

The symbol of sodium is :

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Sa

Na

Pa

Ca

Rapid growth of algae in water bodies is because of detergent having.

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Carbonate salts.

Sulphonic acid salts.

Sulphate salts.

Phosphate salts.

The process by which atmospheric nitrogen is turned into nitrates in the soil is called.

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Nitration

Fixing

Oxidation

Reduction

Which one is triglyceride.

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carbohydrates

Proteins

Lipids

Vitamins

Benzene is formed by the polymerization of.

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Alkene

Alkane

Acetylene

Methane.

Which disease cause liver inflammation?

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Typhoid

Jaundice

cholera

Hepatitis

The nitrogen present in urea is used by plants to synthesize.

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Sugar

Proteins

Fats

DNA

At equilibrium state there are possibilities: OR types of chemical equilibrium are.

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1

2

3

4

Who proved that the presence of hydrogen as the main constituent of all acids.

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Lavoisier

Humphrey Davy

Dalton

Arrhenius

Which compound do not produce in the halogenation of methane.

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Chloroform

Carbon tetrachloride

Carbon black

Chloromethane

Dextrose is a crystallized:

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sucrose

lactose

glucose

fructose

Alkanes are also called:

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olefins

Paraffins

aliphatic compound

cyclic compounds

The mass fo 1.505 x 10²³atoms of sulphur is.

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0.5 g

0.6 g

0.7 g

0.8 g

In which compound oxidation state of chlorine is +5

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NaCl

HOCl

NaClO3

NaClO2

the value of delta H and delta E for liquids and solids is almost same because.

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No change in temperature

Heat absorbed

No change in volume

Heat evolved

Melting of ice can be forwarded by the use of.

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LiCl

BeCl2

NaCl

Ag Cl

Oxidation number of Cr in a C₂CrO₄ is

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+2

+4

+6

+8

The sum of mole percent of all the components of solution is always equal to.

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Unity

100

Less than one

Less than 100

In Daniel cell, if salt bridge is removed between the two half cells, the voltage.

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Drops to zero

Does not changes

Increases gradually

Increases rapidly

The percentage of s characters in sp3 hybrid orbital is.

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25%

33.3%

50%

75%

Which of the following will have the same number of molecules at STP

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280 cm³of CO₂and 280 cm³of N₂O

11.2 dm³of O₂and 32 g of O₂

44 g of CO₂and 11.2 dm³of CO

28 g of N₂and 5.6 dm³of oxygen

A solution of glucose is 10% The volume in which 1 g mole of it dissolved will be.

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1 dm3

1.8 dm3

900 cm3

200 cm3

According to Boyle's law which parameters give a straight line parallel to x -axis when we plot a graph between

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P and V

P and 1/V

P and PV

V and T

Which one of the following product is not formed when acetic acid is reacted with HI and red phosphorus.

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I2

H2O

CH3CH3

CH3CH2OH

Dolomite is a carbonate of

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Be

Mg

Na

Ba

An element that has a high ionization energy and tends to be chemically inactive would most likely to be

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An alkali metal

A transition element

A noble gas

A halogen

Which compound form benzoic acid on oxidation with strong oxidizing agent.

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Toluene

Ethyl benzene

n propyl benzene

All

Which elements are deposited at the cathode during the electrolysis of brine in diaphragm cell

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H₂

Ba

Ra

Rn

Which of the following has highest M.P

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Aluminium

Silicon

Phosphorus

Sulphur

Which process is used to convert vegetable oil to vegetable ghee.

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Hydrolysis

Oxidation

Esterification

Hydrogenation

Who gave the law of Triads in 1829?

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Dobereiner

Mosely

Newland

Mendeleev

Which can produce ketone

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Sec alcohol

Calcium acetate

Propyne

All of these

Out of all the elements of Group V-A the highest ionization energy is possessed by

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N

P

Sb

Bi

The conversion of potassium magnate to potassium permanganate by passing Cl2 Through aqueous solution of K2MnO4 is called.

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Contact process

Open hearth process

Stadeler's process

Thermite process