Rate of a reaction changes from \(2.48 \times 10^{-3}\text{ mol}^{-1}\text{ sec}^{-1}\) to \(4.96 \times 10^{-3}\text{ mol}^{-1}\text{ sec}^{-1}\) when concentration of reactant, is changed from \(0.6\text{ M}\) to \(2.4\text{ M}\) respectively, the order of reaction is :

The correct structure of the dipeptide Gly-Ala (glycyl alanine) is:

If \(75\)% of a first-order reaction gets completed in \(32\) minutes, the time taken for \(50\)% completion of this reaction is:

The main cause of basicity of oxoacids of phosphorous is :

Read the passage carefully and answer the Questions
Amines are classified as primary \(\left(1^{\circ}\right)\), secondary \(\left(2^{\circ}\right)\) and tertiary \(\left(3^{\circ}\right)\) depending upon the number of hydrogen atoms replaced by alkyl or aryl groups in ammonia molecules. Aliphatic amines are a stronger bases due to \(+I\) effect of an alkyl groups.
Intermolecular hydrogen bonding in primary and secondary amines affects the boiling points of amines. The intermolecular association is more in primary amines than in secondary amines as there are more number of hydrogen atoms available for hydrogen bond formation. Nitro compounds are reduced to amines by passing hydrogen gas in the presence of finely divided nickel, palladium or platinum and also by reduction with metals in an acidic medium. Gabriel synthesis is used for the preparation of primary amines. Primary amines react with nitrous acid to give unstable diazonium-salts which can be used to synthesize a variety of compounds.
The compound having the highest boiling point is

Which of the following formula correctly represents the double salt "Carnallite"?

To prepare 250 mL standard solution of M/20 \(\text{NaCl}\), amount of \(\text{NaCl}\) required is :

Which of the following statements are correct about restriction enzymes?
(A). Each restriction endonuclease recognizes a specific palindromic nucleotide sequence in the DNA.
(B). Endonuclease removes nucleotides from the terminal end of the DNA.
(C). The first discovered restriction endonuclease is Hind II.
(D). Restriction enzymes belong to a larger class of enzyme polymerase.
Choose the correct answer from the options given below:

Arrange the following compounds in the increasing order of their boiling points:
A. \(\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}\)
B. \(\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{OH}\)
C. \(\text{CH}_3\text{CH}_2\text{OCH}_2\text{CH}_3\)
D. \(\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_3\)
E. \(\text{CH}_3\text{CH}_2\text{CH}_2\text{CHO}\)
Choose the correct answer from the options given below:"

Which of the following will NOT be coloured?

\(\int\left(\frac{1}{\log _e x}-\frac{1}{\left(\log _e x\right)^2}\right) d x\) is equal to

If \(A=\left[\begin{array}{cc}3 & 1 \\ 2 & -3\end{array}\right]\) be such that \(A^{-1}=K A\), then the value of \(K\) is :

The volume of spherical balloon is increasing at the rate of 4 \(cm ^3\) / sec. The rate of increase of its surface area, when the radius is 3 cm will be :-