For a reaction
\(2A + B_{2} \rightarrow 2A_{2}B\)
The reactant A will be consumed at:

Butanone is less reactive than propanal towards nucleophilic addition reaction because :

Which of the following reagents can bring about the given conversion?
3-Nitrobromobenzene to 3-Nitrobenzoic acid

The product in the following reaction is

Answer the question on the basis of passage given below :
All transition elements display typical metallic properties like high melting point, boiling point, tensile strength, high malleability and ductility, luster, etc. Their metallic character increases down the group and elements of \(4 d\) and 5d series exhibit higher metallic characters. They show variable oxidation states and forms a number of coloured compounds due to the presence of unpaired electrons which shows d-d transitions and makes them paramagnetic.
The two strongest oxidising agents among the oxides will be :
A. \(MoO _3\)
B. \(CrO _3\)
C. \(Mn _2 O _7\)
D. \(WO _3\)
E. \(VO _2\)
Choose the correct answer from the options given below:

The vapour pressure curve of the mixture of ethanol and acetone is higher than its constituents because:

Equilibrium constant is \(2 \times 10^{37}\) at 298 K for the reaction:
\(Zn(s) + Cu^{2+}(aq) \rightarrow Zn^{2+}(aq) + Cu(s)\).
Predict the spontaneity of the cell and calculate \(E_{\text{cell}}\).
[Given: \(\text{log } 2 = 0.3010\)]

Read the passage carefully and answer the questions
Carboxylic acids are the organic compounds which comprise of carboxyl functional group, -COOH. These are generally found in nature, some higher members are known as fatty acids as they occur in natural fats as esters of glycerol. They can be prepared from oxidation of alcohols and aldehydes, hydrolysis of nitriles and amides and Grignard reagents. They are stronger acids than simple phenols and alcohols. but weaker than mineral acids. Substituents affect the acidity of aliphatic and aromatic carboxylic acids. They undergo reactions involving cleavage of -OH and C-OH bond. Carboxylic acids having an alpha hydrogen get halogenated in the presence of red phosphorus to form alpha halo carboxylic acids. The reaction is known as Hell Volhard Zelinsky reaction. Besides these aromatic carboxylic acids undergo electrophilic substitution reactions. They are versatile and are employed in the manufacture of various useful compounds. For example, methanoic acid is used in rubber, textile, dyeing, leather and electroplating industries. Higher fatty acids are used in the manufacture of soaps and detergents. Esters of Benzoic acid are used in perfumery.
Benzoic acid in the presence of conc. \(HNO _3\) and conc. \(H _2 SO _4\) gives major product as:

Identify the correct combination of salient features of the genetic code.
(A) AUG has dual functions as it codes for methionine (met), and also act as initiator codon.
(B) Some amino acids are coded by more than one codon, hence the code is degenerate.
(C) UAA, UAG, UGG are stop terminator codons.
(D) The codon is read in mRNA in a continuous fashion and there are no punctuations.
Choose the correct answer from the options given below:

Identify, which is not the example of homology in evolution.

Assume \(A, B\) and \(C\) are matrices of order \(m \times n, n \times 3\) and \(3 \times q\) respectively. The restrictions on \(m, n\) and \(q\) so that \(A B+B C\) is defined are

For \(|x|<1\), if \(x=\cos \left(\frac{1}{a} \log y\right)\), then

Arrange the following events of the menstrual cycle in the correct
sequence:
(A) The rising level of FSH stimulates the growth of the ovarian follicle and
secretion of estrogen.
(B) The corpus luteum secretes progesterone to maintain the endometrium.
(C) The rapid secretion of LH leads to the rupturing of the Graafian follicle.
(D) The release of unfertilized secondary oocyte leads to the menstrual
cycle.
Choose the correct answer from the options given below: