15% of an alloy was silver. If in a quantity of alloy there was 51 g of silver, what was the quantity of the other elements in the alloy?

CuO + H2 ---> Cu + H2O. This equation is an example of

Consider the argument and decide which of the given assumptions is/are implicit.

Argument :

A top university has reduced the syllabus of Mathematics in Class 12.

Assumptions:

1. Students can score more marks than before in Mathematics.
2. This has been done to reduce the stress and burden of the students in Mathematics.

The absolute refractive index of air is

Atomic mass of Nitrogen is 14 and that of Hydrogen is 1. What will be the molecular mass of Ammonia?

The percentage increase in the population is highest as compared to that of the previous year in the year :

Consider the given statement to be true and decide which of the given conclusions logically follows from the statement.

Statement :

Some bugs are birds. All the birds are fruits.

Conclusions :

1. All the fruits are birds.
2. Some of the bugs are fruits.

WHICH OF THE FOLLOWING IS not A RENEWABLE SOURCE OF ENERGY?