The general formula of zeolite is \(\mathrm{Na}_2 Z\). In this ' \(Z\) ' represents

Identify the condensation product of the following reaction.
\[
R-\mathrm{CHO}+\mathrm{NH}_2 \mathrm{OH} \longrightarrow
\]

The rate constant, k of a zero order reaction \(2 \mathrm{NH}_3(\mathrm{~g})\) \(\underset{1130 \mathrm{~K}}{\stackrel{\mathrm{Pt}}{\longrightarrow}} \mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g})\) is \(\mathrm{y} \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\). The rate of formation of hydrogen (in \(\mathrm{mol} \mathrm{L}^{-1} \mathrm{~s}^{-1}\) ) is

Which one of the following is the molecular formula of a tertiary amine?

Hydrolysis of \(\mathrm{NCl}_3\) gives \(\mathrm{NH}_3\) and \(X\). Which of the following is \(X\) ?

Which of the following is a biodegradable polymer of polyamide class?

Two statements are given below.
Statement I: \(\mathrm{SnF}_4, \mathrm{PbF}_4\) are ionic in nature
Statement II: \(\mathrm{GeCl}_2\) is more stable than \(\mathrm{GeCl}_4\)
The correct answer is

Which of the following statement is not correct?

If \(\cos \theta=\frac{\cos \alpha-\cos \beta}{1-\cos \alpha \cos \beta}\), then one of the values of \(\tan \frac{\theta}{2}\) is

Match of the following.
\(\begin{array}{ll}
\hline \text{ Column I } & \text{ Column II } \\
\hline \begin{array}{ll}
\text{A. Ratio of } \frac{\Delta Q}{\Delta U} \text{ in an isobaric} \\
\text{process}
\end{array} & 1. \frac{T_1}{\left(T_1-T_2\right)} \\
\hline \begin{array}{ll}
\text{B. Ratio of } \frac{\Delta Q}{\Delta W} \text{ in an isobaric} \\
\text{process}
\end{array} & 2. \frac{T_2}{\left(T_1-T_2\right)} \\
\hline \begin{array}{l}
\text{C. Coefficient of performance} \\
\text{of a refrigerator}
\end{array} & 3. \frac{\gamma}{\gamma-1} \\
\hline \begin{array}{l}
\text{D. Coefficient of performance} \\
\text{of a heat pump}
\end{array} & 4. \gamma \\
\hline
\end{array}\)
Codes
\(\begin{array}{llll}A & B & C & D\end{array}\)

If the wave number of radiation emitted for the electron transition from an excited state to ground state of hydrogen is \(\frac{5 \mathrm{x}}{36} \mathrm{~m}^{-1}\), the wave number of radiation absorbed for the electron transition from the above excited state to next immediate excited state in \(\mathrm{m}^{-1}\) is:

If \(4 x^2-5 x y+y^2=0\) represents a pair of lines with slopes \(m_1\) and \(m_2\), then the value of \(\left|m_1-m_2\right|\) equals

A block of mass 5 kg is placed on a rough horizontal surface having coefficient of friction 0.5 . If a horizontal force of 60 N is acting on it, then the acceleration of the block is (Acceleration due to gravity, \(g=10 \mathrm{~ms}^{-2}\) ).