1. Boron
2. Indium
3. Sodium
4. magnesium
Boron
1. t1/2=0.693 x k
2. k.t1/2=1/0.693
3. k.t1/2=0.693
4. 6.93 x k x t1/2=1
k.t<sub>1/2</sub>=0.693
1. 1
2. 3
3. 5
4. 2
3
1. 0.693
2. 1
3. 6.93
4. 2.303
2.303
1. 2C2H5OH, 6O2
2. 4HCHO, 5H2O
3. 4CO, 10H2O
4. 4CO2, 6H2O
4CO<sub>2</sub>, 6H<sub>2</sub>O
1. SO2
2. H2S
3. SO3
4. S (Vapour)
SO<sub>2</sub>
1. A>D>C>B
2. B>C>D>A
3. C>D>B>A
4. A>B>C>D
B>C>D>A
1. X (α, p) Y
2. X (α, n) Y
3. X (p, n) Y
4. X ( 1H2, p) Y
X ( <sub>1</sub>H<sup>2</sup>, p) Y
1. Cl2 / UV light and C2H6
2. PCl3 and C2H4
3. HCl and C2H6
4. Cl2 and C2H2
Cl<sub>2</sub> / UV light and C<sub>2</sub>H<sub>6</sub>
1. P
2. Sb
3. As
4. Bi
Bi