An element with atomic number …………… will form a basic oxide.

1. 7 (2,5)
2. 17 (2,8,7)
3. 14 (2,8,4)
4. 11 (2,8,1)

Receptors are usually located in sense organs. Gustatory receptors are present in

1. tongue
2. nose
3. eye
4. ear

A farmer wants to grow banana plants genetically similar enough to the plants already available in his field. Which one of the following methods would you suggest for this purpose?

1. Regeneration
2. Budding
3. Vegetative propagation
4. Sexual reproduction

An element 'M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of 'M' is:

1. 10
2. 12
3. 14
4. 18