1. Which electronic configuration is conect?
Zn2+:[Ar]3 d10 \mathrm{Zn}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^{10} Zn2+:[Ar]3 d10
Ni2+:[Ar]3 d64 s2 \mathrm{Ni}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^{6} 4 \mathrm{~s}^{2} Ni2+:[Ar]3 d64 s2
Fe2+:[Ar]3 d4 s2 \mathrm{Fe}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d} 4 \mathrm{~s}^{2} Fe2+:[Ar]3 d4 s2
Cu2+:[Ar]3 d84 s1 \mathrm{Cu}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^{8} 4 \mathrm{~s}^{1} Cu2+:[Ar]3 d84 s1
2. Which produces carbonium ion?
SN2 S_{N} 2 SN2
SN1 S_{N} 1 SN1
R−Mg−X \mathrm{R}-\mathrm{Mg}-\mathrm{X} R−Mg−X
all
3. What will be the molarity of 500 mL 500 \mathrm{~mL} 500 mL solution of 24.5 gH2SO4 24.5 \mathrm{~g} \mathrm{H}_{2} \mathrm{SO}_{4} 24.5 gH2SO4 ?
1M
0.5 M
0.25M
0.5N
4. In 100ml 100 \mathrm{ml} 100ml blood of human how much CO2 \mathrm{CO}_{2} CO2 is conducted as carbamino compound?
1 ml
2 ml
3 ml
4 ml
5. Which is not a feature of virus?
no DNA
variation occurs
transfusion occurs
permanent parasite
