Consider the following data for the given reaction \(2 \mathrm{HI}_{(\mathrm{g})} \rightarrow \mathrm{H}_{2(\mathrm{g})}+\mathrm{I}_{2(\mathrm{g})}\). The order of the reaction is ................

	\(1\)	\(2\)	\(3\)
\(\text{HI} \left(\text{molL} ^{-1}\right)\)	\(0.005\)	\(0.01\)	\(0.02\)
Rate \(\left(\text{molL} ^{-1}\text s-1\right)\)	\(7.5 \times 10^{-4}\)	\(3.0 \times 10^{-3}\)	\(1.2 \times 10^{-2}\)

Which of the following nitrogen containing compound does not give Lassaigne's test ?

For water at \(100^{\circ} \mathrm{C}\) and \(1\, bar,\) \(\Delta_{\text {vap }} \mathrm{H}-\Delta_{\text {vap }} \mathrm{U}=...... \times 10^{2} \,\mathrm{~J}\, \mathrm{~mol}^{-1}\). (Round off to the NearestInteger) \(\left[\right.\) Use : \(\left.R=8.31\, \mathrm{~J}\, \mathrm{~mol}^{-1}\, \mathrm{~K}^{-1}\right]\) [Assume volume of \(\mathrm{H}_{2} \mathrm{O}(\mathrm{l})\) is much smaller than volume of \(\mathrm{H}_{2} \mathrm{O}(\mathrm{g})\). Assume \(\mathrm{H}_{2} \mathrm{O}(\mathrm{g})\) treated as an ideal gas]

The increasing order of basicity of the following compounds is

Choose the correct statements about the hydrides of group \(15\) elements. \(A\). The stability of the hydrides decreases in the order \(\mathrm{NH}_3>\mathrm{PH}_3>\mathrm{AsH}_3>\mathrm{SbH}_3>\mathrm{BiH}_3\) \(B\). The reducing ability of the hydrides increases in the order \(\mathrm{NH}_3<\mathrm{PH}_3<\mathrm{AsH}_3<\mathrm{SbH}_3<\mathrm{BiH}_3\) \(C\). Among the hydrides, \(\mathrm{NH}_3\) is strong reducing agent while \(\mathrm{BiH}_3\) is mild reducing agent. \(D\). The basicity of the hydrides increases in the order \(\mathrm{NH}_3<\mathrm{PH}_3<\mathrm{AsH}_3<\mathrm{SbH}_3<\mathrm{BiH}_3\)
Choose the most appropriate from the option given below.

The primary and secondary valencies of cobalt respectively in \(\left[ Co \left( NH _3\right)_5 Cl \right] Cl _2\) are :

Number of cyclic tripeptides formed with \(2\) amino acids \(A\) and \(B\) is:

If equations \(ax^2 + bx + c = 0\) \(\left( {a,b,c \in R,a \ne 0} \right)\) and \(2x^2 + 3x + 4 = 0\) have a common root, then \(a : b : c\) equals

In the Bohr 's model of hydrogen-like atom the force between the nucleus and the electron is modified as \(F = \frac{{{e^2}}}{{4\pi {\varepsilon _0}}}\left( {\frac{1}{{{r^2}}} + \frac{\beta }{{{r^3}}}} \right)\), where \(\beta \) is a constant. For this atom, the radius of the \(n^{th}\) orbit in terms of the Bohr radius \(\left( {{a_0} = \,\frac{{{\varepsilon _0}{h^2}}}{{m\pi {e^2}}}} \right)\) is

Wax is coated on the inner wall of a capillary tube and the tube is then dipped in water. Then, compared to the unwaxed capillary, the angle of contact \(\theta \) and the height \(h\) upto which water rises change. These changes are

A lift of mass \(1600\) kg is supported by thick iron wire. If the maximum stress which the wire can withstand is \(4 \times 10^8\) N/m\(^2\) and its radius is \(4\) mm, then maximum acceleration the lift can take is _______ m/s\(^2\). (take \(g = 10\) m/s\(^2\) and \(\pi = 3.14\))

The number of \(sp^2\) hybridised carbons present in "Aspartame" is

Given below are two statements : One is labelled as Assertion \(A\) and the other is labelled as Reason \(R\). Assertion \(A\) : \(n - p - n\) transistor permits more current than a \(p-n-p\) transistor Reason \(R\) : Electrons have greater mobility as a charge carrier Choose the correct answer from the options given below