In nuclear explosion, the energy is released in the form of :

• kinetic energy

• electrical energy

• potential energy

• None of these

Which one of the following aqueous solutions of salts has the lowest pH value ?

• CH₃COONa

• NaCl

• NH₄OOCCH₃

• NH₄Cl

Methoxy methane and ethanol are :

• positionl isomers

• chain isomers

• functional isomers

• optical isomers

KI and CusO₄ solution when mixed gives :

• CuI₂ + K₂SO₄

• Cu₂I₂ + K₂SO₄ + I₂

• K₂SO₄ + Cu₂I₂ + I₂

• K₂SO₄ + CuI₂ + I₂

In the reaction ,  $\stackrel{{\mathrm{NaNH}}_2/\mathrm{liq}. \mathrm{ammonia}}{\to }$ A , the major product A is :

The end product in the sequence would be 

C₃H₇OH $\underset{170°}{\overset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}$ A $\stackrel{{\mathrm{Br}}_2}{\to }$ B $\underset{\mathrm{KOH}}{\overset{\mathrm{Alc}.}{\to }}$ C

• CH₃-C$\equiv$CH

• CH₃-C(OH)=CH₂

• CH₂=C=CH₂

• CH₃-CH(OH)-CH₂(OH)

Which of the following electrolytic solutions has the least specific conductance ?

• 0.02 N

• 0.2 N

• 2 N

• 0.002 N

18.

Which of the following can be measured by the Ostwald-Walker dynamic method ?

• Relative lowering of vapour pressure

• Lowering of vapour pressure

• Vapour pressure of the solvent

• All of the above

The number of disulphide linkages present in insulin are :

• 1

• 2

• 3

• 4

Lanthanides and actinides are also called :

• short periods

• inner-transition elements

• long periods

• main transition elements