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The colour of Emerald is

A. Deep Green

B. Violet

C. Prussian Blue

D. Yellow

Correct Answer :

A. Deep Green


Related Questions

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The recent atomic weight scale is based on

A. 1H1

B. 1H2

C. 6C12

D. 8O16

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Polythene is industrially prepared by the polymerisation of

A. styrene

B. methane

C. ethylene

D. acetylene

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4

Earth's seasons are caused by which of the following?

A. The varying amount of sunspot activity

B. The tilt of the earth's rotation relative to the ecliptic as earth revolves around the sun

C. The earth's orbit around the sun as an exlipse rather than a circle

D. The rotation of during a 24-hour day

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4

Water has maximum density at

A. 0°C

B. -4°C

C. 100°C

D. 4°C

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Which of the following is commonly called a polyamide ?

A. Orion

B. Terylene

C. Rayon

D. Nylon

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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

Which of the following is the lightest metal ?

A. Mercury

B. Lithium

C. Lead

D. Silver

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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

The Panda belongs to the same family as that of

A. Cat

B. Bear

C. Rabbit

D. Dog

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4

Which of the following elements is obtained from sea weeds ?

A. Argon

B. Vanadium

C. Iodine

D. Sulphur

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4

The speed of light with the rise in the temperature of the medium

A. Increases

B. Remains unaltered

C. Drops sharply

D. Decreases

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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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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

The metallic constituents of hard water are

A. Calcium, magnesium and iron

B. Magnesium, Calcium and tin

C. Magnesium, tin and iron

D. Iron, tin and calcium

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4

The accumulation of stress along the boundaries of lithospheric plates results in which of the following?

A. Earthquakes

B. Magnetic reversals

C. Hurricanses

D. Increased deposition of deep-sea sediments

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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

The hardest substance available on earth is

A. Platinum

B. Quartz

C. gold

D. Diamond

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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

Liquefied Petroleum gas (LPG) consists of mainly

A. Methane, Butane and Propane

B. Methane, Ethane and Hexane

C. Ethane, Hexane and Nonane

D. Methane, Hexane and Nonane

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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

One fathom is equal to

A. 6 feet

B. 6 metres

C. 60 cms

D. 60 feet

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

A. Sodium

B. Cerium

C. Francium

D. Lithium

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4

Permanent hardness of water can be removed by adding

A. Potassium Permanganate

B. Bleaching Powder

C. Chlorine

D. Washing Soda

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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

According to Daltons atomic theory the smallest particle which can exist independently is

A. An atom

B. A cation

C. A molecule

D. An anion

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4

The most important ore of Aluminium is

A. Calamine

B. Calcite

C. Galena

D. Bauxite

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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

Rust is

A. A mixture of FeO and Fe(OH)2

B. A mixture of Fe2O3 and Fe(OH)2

C. A mixture of Fe2O3, 3H2O and FeO

D. FeO only

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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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Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of

A. Sulphonates

B. Zeolites

C. Nitrates

D. None of these