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Which one of the following is one of the primary producers ?

An aqueous solution of copper sulphate is acidic in nature because the salt undergoes

For Lemurs, which among the following is a correct group to place in ?

Largest flower rafflesia is

Sea water can be purified by the process of

The main constituent of natural gas is

Vitamin C is also known as _.

Which cells cannot divide following the birth in humans?

Which one of the following is the best example of desiccant

An artificial satellite orbiting the earth does not fall down because the earths attraction

For separate channels in TDM, it is necessary to use

Laser is a device for producing

Sea water is saltier than rain water as

The main constituents of pearl are

Vulcanization of rubber is carried out by adding

Which one of the following is the correct sequence of change in colours when a turmeric stain on white clothes is scrubbed by soap and then washed with water

An atomic clock is based on transitions in

For shaving which type of mirror is used

Laser is a device to produce

Sea weeds are important source of

Vulcanized rubber contains sulphur

Which device is used to measure blood pressure?

Which one of the following is the important ore magnesium?

For the dumb bell shaped orbital, the value of l is

Laughing gas is

Sensitivity of the human eye is max. in the

The main function of white blood cells in the body is to

Which Famous Scientist, along with Emile Gagnan, invented the Aqua-Lung ?

Which one of the following is the major constituent of biogas

An egg sinks in soft water but floats in a concentrated solution of salt as

For transfusion, the O blood group of a Donor can be accepted by a person having blood group

Lens is made up of

Setting of plaster of paris involves

The main use of magnesia is as a / an

Water can be separated from alcohol water mixture by

Which gas is responsible for swelling of bread?

Which one of the following is the most characteristic property of an element?

For Which among the given substances, the resistance decreases with rise in temperature

Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in

Should cars have bumpers that collapse under impact

The major constituent of gobar gas is

Water exists both as solid and liquid at-

Which gas is used in filling electric bulbs?

Which one of the following is the permissible noise level of industrial areas in India during day time ?

An electric kettle takes 4A current at 220 V. How much time will it take to boil 1 Kg of water from temperature 20°C? The temperature of boiling water is 100°C

For which one of the following is capillarity not the reason?

Silica gel is a

The major contributor to global warming is

Which gas is used in the food packaging industry to prevent chips from getting oxidized?

Which one of the following is the petroleum wax?