A heap of paddy is in the form of a right circular cone whose diameter is 4.8 m and height 1.8 m. If the heap is to be covered exactly by a canvas to protect it from rain, find the area of the canvas required.

If $a^{x}$= b,$b^{y}$ = c,$c^{z}$ = a, then what is the value of xyz ?

Arrange the following in the order of increasing solubility in water
(i)$NaHCO_{3}$ (ii) $KHCO_{3}$ (iii) $Mg{(HCO_{3})}_2$ (iv) $ca{(HCO_{3})}_2$

Match the following :
Actinide element Atomic number
(a) Plutonium 1. 102
(b) Curium 2. 1OO
(c) Fermium 3. 96
(d) Nobelium 4. 94
(a) (b) (c) (d)

Match the Number of electrons transferred (a) when one mole of $KMnO_4$ is reduced to (b)
(a) 1, 3, 4, 5
(b) $Mn_{2}O_3$, $MnO_2$, $Mn{O_4^2}^-$, ${Mn^2}^+$

An example of commonly used herbicide is

Match the following:
I II III
(1) Thiamine (a) Cheilosis (i) Pellagra
(2) Niacin (b) Polyneuritis (ii) Glossitis
(3) Riboflavin (c) Nicotinamide (iii) Beri beri
(4) Biotin (d) Antipernic (iv) Hyperestheria
(5) Cyanacobalamine (e) Coenzyme R (v) Pernicious anaemia

The Indian Constitution describes Legislative Relations between Union and States in Article from

Which of the following is/are incorrectly matched? Select your answer using the codes given below
I. Credit creation - Reserve Bank of India
II. Commercial Bank - Accepting deposits
III. Reserve Bank of India - Control of credit
IV. Quantitative Control — Scheduled Banks

The phase of rapid growth of population in India falls