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What is the oxidation number of the phosphorus in PF3?

3 is the oxidation state of phosphorus in PF3.... View Article

To which crop does “Runner type” plant associate with?

Ground nut... View Article

How does the earth orbit the sun without losing energy?

The earth orbits around the sun without losing energy as the total energy of an orbiting systems is a combonation of kinetic energy of the earth... View Article

Why we beat carpet with stick while dusting the carpet?

While dusting a carpet we beat it with a stick because due to inertia of rest, the dust particles does not change its position while the carpet... View Article

Which type of cells are used to prepare ropes and mats?

Bast fibre is also known as skin fibre or phloem fibre which is used for making ropes and mats.... View Article

Which pair of species has the same number of electrons?

Argon has atomic number 18. i.e number of electrons = 18 and in the same way K+ = 19 - 1 = 18.... View Article

When will the image formed by a convex lens be virtual?

A virtual, erect and enlarged image of an object is formed when it placed between F and O.... View Article

List the factors on which the rate of emission depends.

The number of electrons emitted per second i.e. the rate of emission depends upon... View Article

Which branch of biology deals with the study of fishes?

Ichthyology is also known as fish science is devoted to the study of fish.... View Article

Which law is also known as Law of constant composition?

Law of definite proportions is also known as law of constant composition.... View Article

How does the light coming from an object enter the eye?

The light coming from an object enters the eye through cornea and pupil.... View Article

Give the relation between acceleration, mass and force.

The relation between acceleration, mass and force is given by: F=ma Force = Mass x acceleration As per Newton's second law of motion,... View Article

How much solar energy is received by India in one year?

India receives about 5,000 trillion kWh of solar energy every year.... View Article

Hauz Khas tank was built in which present Indian state?

Hauz Khas tank was built in Delhi which present in Indian state.... View Article

What is the P-P-P bond angle in P4 molecule in degrees?

The P-P-P bond angle in a tetrahedral P4 molecule is only 60o.... View Article

Which crop is associated with a disease called red rot?

Sugarcane is associated with a disease called red rot.... View Article

What is the maximum number of known compounds of Xenon?

XeF2, XeF4 and XeF6 are known compounds of Xenon.... View Article

Name the element that has not yet been reacted with F2.

There is no known compound of Ar and F2 as yet.... View Article

How is the SI unit of heat related to the unit calorie?

1 J = 0.24 cal as 1 cal is 4.2 J... View Article

What are the three main parts of a hot cathode ray tube?

The three main parts of a cathode ray tube are Electron gun, Deflecting system and Fluorescent screen... View Article

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