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An oxide that combines with water to give an acid is termed:

An oxide that combines with water to give an acid is termed acidic oxide.... View Article

In an electrolytic cell the signs of the cathode and anode are

In an electrolytic cell, the anode is positive and cathode is negative.... View Article

On what basis the laws of chemical combinations can be explained?

Dalton's atomic theory could explain the laws of chemical combinations.... View Article

Biological catalysts (enzymes) belong to which of the following class of molecules?

Enzymes are nitrogenous organic compounds generally made of proteins.... View Article

In a solid, heat is transferred mainly by the process of :

In a solid, heat is transferred mainly by the process of conduction.... View Article

What are the molecules which concentrate and accumulate on the surface called?

The molecules which come and adhere on surface are called adsorbate.... View Article

Oxides of which elements dissolve in moisture and produce sulphuric acid?

Oxides of sulphur dissolve in moisture and produce sulphuric acid.... View Article

Name the layer that covers the lungs just like the human body is covered by the skin.

Pleura membrane surrounds the lungs and protects it from friction.... View Article

At what temperature the density of water is maximum? State its value.

At 40C, the density of water is maximum. Its value is 1000 kg m-3... View Article

What is the speed of the sound in a perfectly rigid rod?

Speed of the sound in a perfectly rigid rod would be infinite. For a perfectly rigid rod, the bulk modulus of the material can be given by B=∞... View Article

One of the uses of a cathode ray tube is: a. They are used in mobile phones and WiFi b. They are used to break DNA molecules c. They are used to check the waveforms of electric signals d. They are used in dental practices.

It is used for checking the waveforms of an electrical signal.... View Article

How many whole numbers are there between 32 and53?

The whole numbers are a collection of positive integers and zero and excluding fractions and negative integers. It is represented as “W” and the... View Article

How many hours difference is there between the GMT and IST?

The difference between GMT and IST is 5 hours and 30 minutes... View Article

Angiosperms that bear parallel venation in leaves and fibrous roots are called:

Monocots bear parallel venation in leaves and fibrous roots.... View Article

Mendeleev predicted the existence of which element/elements in the periodic table?

Mendeleev predicted the existence of gallium and germanium.... View Article

A man in the lift weighs more, when the lift is a. accelerating upward b. moving up with constant velocity c. accelerating downward d. moving down with constant velocity

A person weighs more in a lift that is accelerating upward.... View Article

How many petals or its multiples are found in pentamerous flowers?

Pentamerous flowers have five or multiples of five petals.... View Article

Among the following colours, which is the highest absorbent of heat radiations? a. White b. Yellow c. Black d. Violet

Black colour is the highest absorbent of heat radiations.... View Article

Rain water has a pH of 5.6 due to presence of:

Rain water has a pH of 5.6 due to presence of H+ ions.... View Article

Which of the following lenses would you prefer to use while reading small letters found in a dictionary? Option A: A convex lens of focal length 50 cm Option B: A concave lens of focal length 50 cm Option C: A convex lens of focal length 5 cm Option D: A concave lens of focal length 5 cm

Correct option: C A convex lens of focal length 5 cm A convex lens forms an enlarged and virtual image of an object when the object is placed... View Article

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