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An electromagnetic wave of frequency v = 3.0 MHz passes from vacum into a dielectric medium with permittivity ε = 4.0 Then :

Formic acid is produced by

Silver halides are used in photographic plates as they are

The major harmful gas emitted by automobile vehicles which causes air pollution is

Water is not effective in extinguishing a fire caused by petrol as

Which German mechanical engineer discovered X-rays?

Which one of the following lubricants is most suitable for drawing mild steel wires?

An Element Atomic number 17 and Mass number 36, then number of neutrons present in it

Foul smell in a Urinal is caused due to ?

Lime water contains

Silver halides are used in photographic plates because they are

The major ingredient of leather is:

Water is not suitable as a calorimetric substance as it:

Which has strongest force in nature

Which one of the following materials is very hard and very ductile?

An element with atomic number 36 belongs to the

Four beats per second are heard in a gas when two waves of wavelength 1.0 m and 1.01 m are passed in it. The speed of sound in the gas will be :

Limestone is a raw material used by which industry -

Slag is a name given for

The major use of sulphur is in the manufacture of

Water is used in Heated water of polyethenes because-

Which human organ is affected by consumption of food adulterant ?

Which one of the following noble gases is not found in atmosphere?

An emulsifier is an agent which

Free-living nitrogen fixing microorganisms are

Liquefied Petroleum Gas (LPG) consists of

The male sex hormone is

Which hydrocarbon is formed by the action of sodium on ethyl iodide?

Which one of the following pairs does not have the same dimension

An emulsion is a colloid of a

Friction can be reduced by changing from

Liraglutide has recently been approved as a drug, it has been developed to treat

Smoke is formed due to

The mammal that lays eggs is

Water is used in hot water bags as

Which insect sits on uncovered food?

Which one of the following pairs of rays is electromagnetic in nature?

An eudiometer measures

Litmus is obtained from

Soap is a mixture of sodium or potassium salts of

Water pipes in hilly areas often burst on a cold frosty night, as

Which instrument is used for photographing the Sun

Which one of the following plants has the largest flower?

An example of heterocyclic compound is

From which part of Opium plant we get morphine -

Locomotory organ of a starfish is

Soap is prepared by boiling caustic soda with

The manufacturing of iron from ironore involves the process of

We are able to place a pile of books on the shelf due to

Which instrument is used to convert mechanical energy into electric energy