Which of following is a correct statement ?

Which of the following set of reagents will convert aniline to p-nitroaniline?

Which of the following statements is not correct with reference to a catalyst?

Match List-l with List-ll

List-I (Name of the molecule/drug)	List-II (Use/disease name)
(A) Thyroxine	(I) Scurvy
(B) Ascorbic acid	(II) Thyroid gland
(C) Steroid hormones	(III) Identification of criminals
(D) DNA fingerprinting	(IV) Adrenal cortex

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Which of the following sugar is non-reducing?

Which of the following compounds can be used as antifreeze in automobile radiators?

Match List-l with List-II

List-l	List-II
A. \(CH _3 CHO \xrightarrow{773 K} CH _4+ CO\)	I. Zero order
B. \(2 NH _3 \xrightarrow{ Pt } N _2+3 H _2\)	II. Carbolic acid
C. \(H _2+ Br _2 \rightarrow 2 HBr\)	III. 1.5
D. \(SO _2 Cl _2 \rightarrow SO _2+ Cl _2\)	IV. First order

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Answer the questions on the basis of passage given below :
As aldehydes ketones possess the carbonyl functional group, they show similar reactions. They exhibit nucleophilic addition reactions, reduction, oxidations, reactions due to alpha-Hydrogen atom, and many other reactions, like Cannizzaro reaction to electrophilic substitution reactions (in case of aromatic aldehydes ketones).
These reactions help in the preparation of a number of important compounds, like acetic acid, vinyl acetate, polymers and in perfume and dye industries. Nucleophilic addition reactions form cyanohydrins, acetals, alcohols and N -substituted derivatives like imine, oxime, semicarbazone, phenylhydrazone Schiff's base. Reactions due to alpha-hydrogen atoms help in formation of aldols and alpha, beta-unsaturated aldehydes ketones.
Which of the following does not give iodoform test?


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We use microbes and microbially derived products almost every day. Bacteria called lactic acid bacteria (LAB) grow in milk to convert it into curd. The dough, which is used to make bread, is fermented by yeast called Saccharomyces cerevisiae. Microbes are used to produce industrial products like lactic acid, acetic acid and alcohol, which are used in a variety of processes in the industry. However, certain bacteria, which grow anaerobically on cellulosic material, produce large amount of methane along with CO2 and H2. These bacteria are collectively called methanogens, and one such common bacterium is Methanobacterium. These bacteria are commonly found in the anaerobic sludge during sewage treatment. Microbes are also used for commercial and industrial production of certain chemicals like organic acids, alcohols and enzymes.
Examples of acid producers are Aspergillus niger (a fungus) of citric acid. You are familiar with the commonly used antibiotic Penicillin. Do you know that Penicillin was the first antibiotic to be discovered, and it was a chance discovery? Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol.
Citric acid is commercially obtained by Aspergillus niger, which is a:

The value of the expression \(\sin[\cot^{-1}(\cos(\tan^{-1} 1))]\) is:

A polythene piece rubbed with wool is found to have a negative charge of \( 8 \times 10^{-10} \, \text{C} \). What is the number of electrons transferred ?

Domain of function \(f(x)=\cos ^{-1} \sqrt{2 x-1}\) is:

75% of a first order reaction was completed in 16 minutes. When was it half completed?
(Given: log(0.75) = -0.125, log(0.25) = -0.602)