Name the type of asexual reproduction in which two individuals are formed from a single parent and the parental identity is lost. Write the first step from where such a type of reproduction begins. Draw first two stages of this reproduction.

You have four beakers A, B, C and D. Out of A and B one has hard water and the other has soft water. Out of C and D, one has soap solution, and the other has a detergent solution. How would you identify these liquids?

OR

A gas is liberated immediately with a brisk effervescence when you add acetic acid to sodium hydrogen carbonate powder in a test tube. Name the gas and describe the test that confirms the identity of the gas.

The following experimental set-ups were kept in the laboratory to show that ‘CO₂ is given out during respiration’.

After 2 hours, in which the delivery tube does the water rise?

Identify

(i) PQ (ii) ∠LMR

(iii) NN2 (iv) RS

The current flowing through a resistor connected in an electrical circuit and the potential difference developed across its ends are shown in the given diagrams.

Find the value of resistance of the resistor in ohms.