An organic compound 'X' on treatment with methyl magnesium bromide gives a compound 'Y' which on hydrolysis gives ethanol. The compound 'X' is:

Read the passage carefully and answer the questions
The chemical reactions proceed at different rates which depend on various factors like concentration, temperature, etc. Rate law is an expression which relates the rate of reaction with concentration of various reacting species in the reaction. For a first order reaction, the concentration of the reactant after time \(t\) is related with its initial concentration by the relation, \(C=C_0 e^{-k t}\). The rate constants for different orders have different expressions. For a first order reaction, \(k=\frac{2.303}{t} \log \frac{a}{a-x}\), where \(a\) is the initial concentration and \(x\) is the extent of reaction.
A first order reaction is one-fifth completed in 40 minutes. Calculate the time required for its 100 % completion

Which of the following statements, for the reaction of type \(A \rightarrow B\), are correct?
(A) The initial rates for a second order reaction depend on the square of the concentration of the reactant
(B) The half-life is the time for half of the reactant to be consumed
(C) The expression for rate of second order reaction is \(r = k[2A]^2\)
(D) The half-life of a second-order reaction depends on the initial concentration
Choose the correct answer from the options given below:

The spin-only magnetic moment of \(\left[ MBr _4\right]^{2-}\) is 5.9 BM.
The metal M is:

Match List I with List II.

List-I	List-II
A. Ni	I. 3d series
B. Cu	II. Lanthanoid contraction
C. Gd	III.\(d^{10}\)
D. Cs	IV. Alkali metal

Choose the correct answer from the options given below:

The correct statements regarding order and molecularity of the reaction are:
(A) The order of a reaction can be zero or an integer.
(B) The molecularity of a reaction can be zero or an integer.
(C) The molecularity cannot be zero or fraction.
(D) The order of a reaction is decided by the slowest step of the complex reaction.
Choose the correct answer from the options given below:

Which of the following is a heteroleptic complex?
(A) 1-Bromobutane
(B) 1-Bromo-2,2-dimethylpropane
(C) 1-Bromo-2-methylbutane
(D) 1-Bromo-3-methylbutane
Choose the correct answer from the options given below :

The correct mathematical representation of the rate of a reaction is

Which of the following matrices is not invertible?

What is the formula for the Tetraammineaquachloridocobalt (III) chloride coordination compound?

Ferric oxide in blast furnace's upper half is mainly reduced by :

Answer the question on the basis of passage given below :
Adsorption is a surface phenomenon which can be expressed by means of an empirical relationship know as Freundlich Adsorption isotherm. The relationship given by \(\frac{x}{m} = Kp^{\frac{1}{n}}\ (n > 1)\)
x = Mass of the gas adsorbed
m = Mass of adsorbent
p = Pressure at which adsorption takes place
K and n are constant
Choose the incorrect statement with reference to physical adsorption:

Read the passage carefully and answer the questions based on the passage:
The number of reacting species (atoms, ions or molecules) taking part in an elementary reaction, which must collide simultaneously in order to bring about a chemical reaction is called molecularity of a reaction. In the rate equation Rate \(=k[\mathrm{~A}]^x[\mathrm{~B}]^y\)
\(x\) and \(y\) indicate how sensitive the rate is to the change in concentration of A and B, respectively. Sum of these exponents, i.e., \(x +y\) gives the overall order of a reaction where \(x\) and \(y\) represent the order with respect to the reactants A and B respectively. Hence, the sum of powers of the concentration of the reactants in the rate law expression is called the order of that chemical reaction. For a first order reaction, the concentration of the reactant varies as \([\mathrm{R}]=[\mathrm{R}]_0 e^{-k t}\)
The units of first and zero order rate constant of reactions are respectively: