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4

The location and energy of an electron in an atom can be specified by

A. Atomic number

B. Atomic mass

C. Quantum numbers

D. None of these

Correct Answer :

C. Quantum numbers


Related Questions

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4

The location and energy of an electron in an atom can be specified by

A. Atomic number

B. Atomic mass

C. Quantum numbers

D. None of these

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4

Lightening cause rainfall because

A. It activate H2O molecule

B. Photo-electricity reaction starts

C. Some of the gas molecules become bigger

D. It cause combination of oxygen and nitrogen

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4

The property of a substance to absorb moisture from the air on exposure is called

A. Desiccation

B. Efflorescence

C. Deliquescene

D. Osmosis

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4

Bromine is

A. A Black solid

B. A red liquid

C. A highly inflammable gas

D. colourless gas insoluble in water

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4

Which of the following is in liquid form at room temperature ?

A. Sodium

B. Cerium

C. Francium

D. Lithium

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4

The colour of Emerald is

A. Deep Green

B. Violet

C. Prussian Blue

D. Yellow

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4

The recent atomic weight scale is based on

A. 1H1

B. 1H2

C. 6C12

D. 8O16

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4

Old-written material, which cannot be read easily can be read by

A. None of these

B. Ultraviolet rays

C. Infra Red rays

D. Cosmic Rays

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4

Glass is made from the mixture of

A. Quartz and mica

B. Sand and salt

C. Sand and silicates

D. None of these

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4

When a gas is turned into a liquid, the process is called

A. evaporation

B. condensation

C. sublimation

D. deposition

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4

Epoxy resins is used as

A. Adhesives

B. Detergents

C. Insecticides

D. Moth repellants

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4

Which of the following characters is not shown by hydrogen

A. It burns in air to form water

B. It supports combustion

C. It readily combines with fluorine and chlorine

D. It combines with almost all metals forming hydrides

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4

Which of the following elements is a metal

A. S

B. Ga

C. Se

D. I

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4

The type of glass used in making prisms and lenses is

A. Pyrex glass

B. Soft glass

C. Flint glass

D. Jena glass

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4

The formula of Plaster of Paris is

A. 2CaSO4, H2O

B. CaSO4

C. CaSO4, 2H2O

D. 2CaSO4, 4H2O

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4

One fathom is equal to

A. 6 feet

B. 6 metres

C. 60 cms

D. 60 feet

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4

The metal used in storage batteries

A. Zinc

B. Iron

C. Copper

D. Lead

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4

The fastest-running terrestrial animal is

A. lion

B. man

C. jaguar

D. cheetah

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4

The metal that is present in Photo Films is

A. Silver

B. Magnesium

C. Platinium

D. Mercury

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4

The major ingredient of leather is

A. Nucleic acid

B. Carbohydrate

C. Collagen

D. Polymer

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4

Pollination by birds is called

A. autogamy

B. entomophily

C. anemophily

D. ornithophily

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4

Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere in future?

A. Atomic warfare

B. Depletion of earth's ozone layer

C. CO2 from fossil fuels

D. Dust clouds from valcanoes

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4

Which of the following is the lightest metal ?

A. Mercury

B. Lithium

C. Lead

D. Silver

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4

The oxide of Nitrogen used in medicine as anaesthetic is

A. Nitric oxide

B. Nitrogen dioxide

C. Nitrogen pentoxide

D. Nitrous oxide

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4

The marine animal called dugong which is vulnerable to extinction is a/an

A. Amphibian

B. Shark

C. Bony fish

D. Mammal

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4

Quartz crystals normally used in quartz clocks etc. is chemically

A. A mixture of B and C

B. Silicon dioxide

C. Germenium dioxide

D. Sodium Silicate

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4

Apparatus invented by Archimedes is :

A. Pulley

B. Microscope

C. Thermemoter

D. Barometer

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4

Nitrification means

A. Conversion of nitrogen to nitric acid.

B. Production of nitrogen from air

C. Convert the atmospheric nitrogen to effective nitrogen compound.

D. Liquifaction of nitrogen

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4

Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?

A. A piece of iron that is not a permanent magnet

B. The north pole of another permanent magnet

C. A positively charged glass rod

D. A negatively charged rubber rod

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4

The removal of top soil by water or wind is called

A. Soil erosion

B. Soil wash

C. Silting of soil

D. Soil creep