Which one of the following plots is correct for a first order reaction?

Which of the following is a true acidic anhydride?

Which of the following is a linear molecule?

The operation of a nuclear reactor is said to be critical when the value of the neutron multiplication factor $K$ is:

$A$ force applied by an engine on a train of mass $2.05 \times 10^6 \ kg$ changes its velocity from $5 \ m/s$ to $25 \ m/s$ in $5 \ minutes$. The power of the engine is (in $MW$)

An ideal gas is taken through the cycle $A \to B \to C \to A$,as shown in the figure. If the net heat supplied to the gas in the cycle is $5 \ J$,the work done by the gas in the process $C \to A$ is .... $J$.