The molality of a solution prepared by dissolving \(4 . 0 ~ g ~ N a O H\) in \(1 0 0 0 ~ m L\) distilled water is _________ (Assume that the density of water is \(1 g mL ^{-1}\) )

The rate constants of the reaction at 100 K and 200 K are \(0.01 s^{-1}\) and \(0.02 s^{-1}\) respectively.
The value of activation energy ( \(E_a\) ) will be
\((\log 2=0.3010)\)

The rate constants of a reaction at 200 K and 300 K are \(0.02 s^{-1}\) and \(0.04 s^{-1}\). The activation energy ( \(E _{ a }\) ) for this reaction will be :

\(H_3 C-CH_2-CH_2-CH_2-CH=CH_2 \xrightarrow{HBr} A\)
A will be

Amongst the following ions which one has the highest magnetic moment value?

According to the collision theory which one of the following statements is correct?

Read the passage carefully and answer the question
The speed at which a chemical reaction takes place is called the rate of reaction. The rate of reaction depends on various factors like concentration of the reactants, temperature, etc. The relation between the rate of reaction and the concentration of reacting species is represented by the equation r = k[A]^x[B]^y, where x and y are the order of the reaction with respect to the reactants A and B, respectively. The overall order of the reaction is x + y. The rate of reaction can also be increased by the use of a catalyst which provides an alternate pathway of lower activation energy. It increases the rate of forward and backward reaction to an equal extent. It does not alter the Gibbs energy of the reaction.
Calculate the order of a reaction whose Rate = k[A]^1/2 [B]^3/2.

Let \(f:[0, \infty) \rightarrow[0,2]\) be defined by \(f(x)=\frac{2 x}{1+x}\), then \(f\) is:

Match List-I with List-II

List-l (Species)	List-II (Population interaction terms)
(A) Monarch butterfly	(I) Brood parasitism
(B) Cuckoo bird	(II) Commensalism
(C) Cuscuta	(III) Camouflage
(D) Sea anemone and Clown fish	(IV) Parasitism

Choose the correct answer from the options given below:

The correct order of relative reactivity of alkyl halides towards \(S N^1\) reaction is:
(I) \(PhCH _2 Cl\)
(II) \(Ph _2 CHCl\)
(III) \(Ph _3 CCl\)

The amount of urea required to make a 500 mL solution of \(20 \%( w / w )\) concentration is

\(\text{t}_{99.9\%}\) with respect to \(\text{t}_{90\%}\) for a first order reaction is :

The first instance of construction of an artificial recombinant DNA molecule was carried out on the plasmid of: