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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

Correct Answer :

C. Deliquescene


Related Questions

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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

Apparatus invented by Archimedes is :

A. Pulley

B. Microscope

C. Thermemoter

D. Barometer

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4

In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If both inputs are positive the output is zero. This is

A. an AND circuit

B. an OR circuit

C. a high-pass filter

D. a NOR circuit

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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

Water has maximum density at

A. 0°C

B. -4°C

C. 100°C

D. 4°C

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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

The fastest acting enzyme in the biological kingdom is

A. amylase

B. lipase

C. carboxypeptidase

D. carbonic anhydrase

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4

Which of the following is commonly called a polyamide ?

A. Orion

B. Terylene

C. Rayon

D. Nylon

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4

The hardest substance available on earth is

A. Platinum

B. Quartz

C. gold

D. Diamond

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4

The fastest-running terrestrial animal is

A. lion

B. man

C. jaguar

D. cheetah

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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

One fathom is equal to

A. 6 feet

B. 6 metres

C. 60 cms

D. 60 feet

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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

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

The formula of Plaster of Paris is

A. 2CaSO4, H2O

B. CaSO4

C. CaSO4, 2H2O

D. 2CaSO4, 4H2O

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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 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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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 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 Panda belongs to the same family as that of

A. Cat

B. Bear

C. Rabbit

D. Dog

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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

Epoxy resins is used as

A. Adhesives

B. Detergents

C. Insecticides

D. Moth repellants

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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

Brass gets discoloured in air due to the presence of which gas in air

A. Carbon dioxide

B. Hydrogen Sulphide

C. Oxygen

D. Nitrogen

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4

In an atomic nucleus, neutrons and protons are held together by

A. Magnetic forces

B. Gravitational forces

C. Coulombic forces

D. Exchange forces

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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

Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called

A. Carbon Monoxide

B. Phosgene

C. Phosphine

D. None of these

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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

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

The intencity of Earthquakes is measured on

A. Beaufort scale

B. Secant scale

C. Mercalli scale

D. Richter scale