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Nematocysts are present in

The apparatus used to test acidity of aqueous solution is

The phenomenon of ejection of electrons from the metal surface when a light of suitable frequency falls on it is called-

What is the unit of the physical quantity Entropy?

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

Holography is a technique of

The phenomenon which causes mirage is

Brass is made of

Honey that has high concentration of sugar does not decay as

Neutrons are obtained by

The atmosphere exerts enormous pressure on us. But we do not feel it because

The photoelectric effect is described as the ejection of electrons from the surface of a metal when -

What is the value of g?

Which of the following is a protein?

Brine refers to:

Neutrons are slowed down in a nuclear reactor by

The atomic weight of uranium is

The plastic material commonly used for making gear wheels is

What is the working principle of periscope?

Wood is the main raw material for the manufacture of

How do marine animals survive in water without air contact?

Newton is the unit of:

The average distance of the planet Mars from the Sun is 141,600,000 miles. This can be represented using standard form as

What is Zeolite

Which of the following is a secondary air pollutant?

Wood Spirit is which of the following ?

Bulbils takes part in

How does calcium carbide ripen mangoes

Night photography photopraphy in mist fog are possible using

The average fixed cost curve will always be

The polymerisation of Which among the given is used in manufacturing of polythene in industry -

What J. B. Dunlop invented?

Which of the following is a skin disease?

X-rays cannot pass through

Burning pyrites ore gives out

Nitrogen fixation is a process of

The average heartbeat rate per minute in a normal person is

The presence of Cobalt in Vitamin B12 was established for the 1st time by

What makes a reptile a reptile?

Which of the following is a waterborne diseases and a cause to gastrointestinal infection.

Xenobiotics which are inherently resistant to microbial attack are called as

Burns cause by steam are much more irritated than those caused by boiling water because -

How does common salt help in separating soap from the solution after saponification?

Nitrogen is an essential constituent of all

The average kinetic energy of the molecules of an ideal gas is directly proportional to

The presence of ozone in the stratosphere is responsible for

What may be the cause of malfunctioning of thyriod gland -

Which of the following is abundant in Gobar gas -

Yeasts moulds are examples of

By which organic compound all the oils are known