The rate law for a reaction between substance P \& Q is given by
Rate = k[P]^x [Q]^y
If concentration of P is doubled and concentration of Q is halved, the ratio of the new rate to the earlier rate of reaction will be : 

Arrange the following in the decreasing order of basic strength in aqueous solution :
(A) \(CH_3NH_2\)
(B) \((CH_3)_3N\)
(C) \((CH_3)_2NH\)
(D) \(NH_3\)
(E) \(C_6H_5NH_2\)
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A first order reaction is found to have rate constant \(k=3.0 \times 10^{-1} \mathrm{~s}^{-1}\). The half-life of the reaction will be:

If the solubility of the given gases in water decreases in the order of formaldehyde, methane, vinyl chloride, argon.
Match List-I with List-II.

List-I(Gas)	List-II(\((\mathrm{K})_{\mathbf{H}} / \mathrm{k}\) bar)
(A) Formaldehyde	(I) 40.3
(B) Vinyl Chloride	(II) 0.413
(C) Argon	(III) 1.83 x \(\mathrm{10}^{-5}\)
(D) Methane	(IV) 0.611

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Read the passage carefully and answer the Questions In the formation of coordination complexes, if the inner \(d\) orbital \((n-1) d\) is used in hybridisation, the complex, is called an inner orbital or low spin or spin paired complex. And if it uses outer \(d\) orbital ( \(n d\) ) in hybridisation (like \(s p^3 d^2\) ), it is called outer orbital or high spin or spin free complex. The degeneracy of the \(d\) orbitals has been removed due to ligand electron-metal electron repulsions in the complex. This splitting of the degenerate levels due to the presence of ligands in a definite geometry is termed as crystal field splitting. For coordination complexes, the magnetic moment is determined by the number of unpaired electrons and is calculated by using the 'spin-only' formula, \(\mu=\sqrt{n(n+2)}\) where \(n\) is the number of unpaired electrons and \(\mu\) is the magnetic moment in units of Bohr magneton (BM). The coordination compounds are of great importance. These compounds are widely present in the mineral, plant and animal worlds and are known to play many important functions in the area of analytical chemistry, metallurgy, biological systems, industry and medicine.
\(\left[ Co \left( NH _3\right)_6\right]^{3+}\) and \(\left[ Ni \left( NH _3\right)_6\right]^{2+}\) respectively are

Match List I with List II

List-l (Name of compound)	List-II (Structure)
(A). Resorcinol	(I).
(B). Catechol	(II).
(C). Hydroquinone	(III).
(D). p-Cresol	(IV).

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Chemisorption has the following traits:
A. High enthalpy of adsorption
B. Reversible
C. Favoured by high temperature
D. Requires low activation enthalpy
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The half-life of a given radioactive nucleus is 200 days. The mean life of this nucleus is

Chlorine containing antibiotic produced by soil microorganisms which is effective for the treatment of typhoid fever is :

Which one of the following is the cause of extinction of Stellar's Sea Cow and Passenger Pigeon?

Three capacitors each of capacitance 9 pF are connected in series. The capacitance of the combination would be :

Arrange the following features related to decomposition cycle in a terrestrial ecosystem in correct sequence?
(A) Fallen leaves eaten by insects and animals
(B) Trees grow in the soil
(C) Some nutrients leach into the soil
(D) Decomposition by earthworm and bacteria etc.
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\((p+q)^2=p^2+2 p q+q^2=1\) represents Hardy Weinberg equation. It is used in: