Revision Booster Chemical Science|CSIR NET 2021 (12 Sep)

Calculate the change in internal energy for a chemical reaction which is carried out at a constant volume and heat is getting evolved.

Pyridine is considered to be less basic than aliphatic amine because the lone pair of electron on N-atom in pyridine resides in:

Determine the number of metal-metal bonds present in Ir₄(CO)₁₂ .

For water,  Calculate the molar entropy of vaporization at 1 atm pressure.

Select the polymer which is both an addition and homopolymer.

i. Neoprene

ii. Polystyrene

iii. Nylon-6,6

iv. Nylon-6

Identify the element which can form stable +4 oxidation state.

1 g of perfect gas at volume V_A, pressure P_A and temperature T_A changes from state A to state B when volume is V_B, pressure is P_B and temperature T_B. Calculate the change in entropy.

Predict the product of the reaction given below:

Indole

Identify the correct set of the biologically essential elements.

Predict the product which will be formed on passing a mixture of furan, ammonia and steam over heated alumina.