The velocity of hydrogen molecule, If the velocity of hydrogen molecule is ...

If the velocity of hydrogen molecule is 5x 10 4 cm sec -1   then its de-Broglie wavelength is: (1) 2 Å    (2) 4 Å    (3) 8 Å    (4)100 Å Ans:  4 Å

What is glassy state of matter?, GLASS: Glass is amorphous solid which is ...

GLASS: Glass is amorphous solid which is not true solid, it is rather super cooled liquid which possesses a very high viscosity. It has no fixed melting point, on heating graduall

Halogens, HALOGENS The halogen group (17) is the biggest electronegative...

HALOGENS The halogen group (17) is the biggest electronegative in the periodic table, and all elements readily form halide ions X-. Trends in chemistry resemble those collect in

Balancing redox equations, Q. How to balance a redox equation? Ans. ...

Q. How to balance a redox equation? Ans. Redox equations may be written and balanced by the ionic half-reaction method. Let's use the half-reaction method to balance the f

Number of nodal planes in a px, The number of nodal planes in a Px is: ...

The number of nodal planes in a Px is: (1) One        (2) Two             (3) Three             (4) Zero Ans:  One

Urea, Solubility of urea

Solubility of urea

What is alloys, Q. What is Alloys? Metals have a property of combining...

Q. What is Alloys? Metals have a property of combining with other metals to form alloys. An alloy may be defined as a solid which is formed by a combination of two or more met

Functions of nucleic acid - replication, Replication: The genetic infor...

Replication: The genetic information for the cell is comprised in the sequence of the bases A, T, G and C that are adenine, thymine, guanine and cytosine correspondingly in the

Ionic bond,

The maximum number of electrons, The maximum number of electrons accommodat...

The maximum number of electrons accommodated in 5f  orbitals are: (1) 5             (2) 10         (3) 14             (4) 18 Ans:  14