Science (English Medium) कक्षा १२ - CBSE Question Bank Solutions

Which among the following is an example of network solid?

Brass is an example of ____________.

Solid X is a very hard electrical insulator in solid as well as in molten state. It melts at extremely high temperature. Solid X is a ____________.

Nature of binding forces present in carbon dioxide molecules in solid state are ____________.

Order of increasing melting points among H₂O_(s), C_(s), CS₂ and Sn is ____________.

What type of interaction hold the molecules together in a polar molecular solid?

Ionization enthalpy is lowest in ____________.

Which among the following is an example of non-polar molecule?

Silicon carbide is an example of ____________.

London forces are present in ____________.

MgO has the structure of NaCl. The coordination number of the ions in MgO is ____________.

The hardest substance among the following is:

Molality of a solution relates the ____________.

Molarity of the solution is ____________.

The sum of all mole fraction for a mixture is always equal to ____________.

Galvanic or a voltaic cell converts the chemical energy liberated during a redox reaction to ____________.

Standard electrode potential is measured taking the concentrations of all the species involved in a half-cell is ____________.

Standard hydrogen electrode operated under standard conditions of 1 atm H₂ pressure, 298 K, and pH = 0 has a cell potential of ____________.

For which of the following reaction the units of rate constant and rate of the reaction are same?

The impurities associated with an ore is known as ____________.