2-Bromopentane is heated with alcoholic KOH. Which is the correct statement for this reaction?
A. Only pent-2-ene is formed.
B. Only pent-1-ene is formed.
C. Both pent-2-ene and pent-1-ene are formed.
D. pent-2-ene will be major product as it is more stable.
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p-block elements are placed in groups 13 to 18 of the periodic table. Group 15 is nitrogen family.
Nitrogen makes various compounds like \(NH _3, HNO _3, N_2 O , NO _2\) etc. Phosphorus exists in the form of white and red phosphorus. White phosphorus glows in dark. \(PH _3\) gas is used as smoke screen. Group 16 is called oxygen family. Dry air contains \(21\% O_2\) gas by volume. Combined sulphur exists as sulphates such as gypsum, epsome salt, baryte etc. The allotropic forms of sulphur are Rhombic and monoclinic sulphur. \(S_2\) is paramagnetic like \(O_2\) and it stable at high temperature.
Group 17 is Halogen family. \(F_2\) is highly reactive, \(Cl _2\) is greenish yellow gas. Both \(SO _2\) and \(Cl _2\) are used for bleaching. Group 18 is Noble gas family but some noble gases also form compounds.
Complete hydrolysis of \(XeF _6\) gives HF and \(XeO _3\) as main products.
At elevated temperature \((\sim 1000 K)\) the dominant form of sulphur is :

For an endothermic reaction, energy of activation is \(E_a\) and enthalpy of reaction is \(\Delta H\)
(both of these are in \(kJ'\) mol\(^{-1}\)), minimum value of \(E_a\) will be :

Amongst the following, identify the condensation polymer/s:
(A)Bakelite
(B) Teflon
(C) Melamine formaldehyde resin
(D) Nylon-2 nylon-6
(E) Buna-S
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Antibiotic, which is bacteriostatic among the following is:

How many moles of dichromate ion will be required to oxidize one mole of \(Fe^{2+}\) to \(Fe^{3+}\) ions in acidic solution?

Which of the following is an example of a minimum boiling azeotrope?

Let \(A=\left[a_{i j}\right]\) be a square matrix of order 3 with \(|A|=2\) and let \(C=\left[C_{i j}\right]\), where \(C_{i j}\) is the cofactor of \(a_{i j}\) in \(A\). Then \(|C|\) is equal to :

Which of the following alkyl halide will undergo \(S_N1\) reaction most readily :

The slope of the stopping potential \(V_0\) versus frequency \(\nu\) of the incident radiation plot is (Where symbols have their usual meaning)

Consider the LPP, optimize \(Z=x+5 y\) subject to \(x+y \geq 5 ; 2 x-5 y \geq 10, x \leq 2 ; x \geq 0, y \geq 0\), then which of the following is correct?

Arrange the following events in correct sequence.
A. Formation of zygote
B. Formation of blastocyst
C. Implantation
D. Formation of morula
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Let \(A=\left[\begin{array}{ll}2 & 3 \\ 1 & 2\end{array}\right]\) and \(B=\left[\begin{array}{cc}4 & -6 \\ -2 & 4\end{array}\right]\), then
(A) \(\operatorname{det}\left(A^T\right)=1\)
(B) \(A B=I\), where \(I\) is the identity matrix of order 2
(C) \(A^{-1}=\left[\begin{array}{cc}2 & -3 \\ -1 & 2\end{array}\right]\)
(D) \(\operatorname{adj}(B)=\left[\begin{array}{ll}4 & 2 \\ 6 & 4\end{array}\right]\)
Choose the correct answer from the options given below :