\(t_{99\%}\) with respect to \(t_{90\%}\) for a first order reaction is :

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Alcohols are versatile compounds as they can act as both nucleophile and electrophile. They undergo reactions based on cleavage of \(\mathrm{O}-\mathrm{H}\) and \(\mathrm{C}-\mathrm{O}\) bonds. The cleavage of \(\mathrm{O}-\mathrm{H}\) bond reflects the acidic character of alcohols. However they are weaker acids than water, phenol and carboxylic acids. Alkoxide ion formed by loss of proton from the OH group of alcohols reacts with water to form the corresponding conjugate acid - base pair. They act as Bronsted base due to presence of unshared electron pairs on oxygen.Both alcohols and phenol react with carboxylic acids, acid chlorides and anhydrides to form esters. The introduction of acetyl group in alcohols or phenol is known as acetylation. Alcohols react with hydrogen halides to form alkyl halides which form the basis of Lucas test. They also undergo acid catalyzed dehydration to form alkenes. Alcohols can be easily oxidized with variety of oxidizing agents. The nature of the product depends on the type of oxidizing agent and the nature of alcohol.
Oxidation of alcohols involves formation of carbon oxygen double bond with

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Name the reagent used in Wurtz Reaction

If cell constant doubles and resistance of cell is halved, what will be new resistivity?

Lactose on hydrolysis gives:

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Vitamins represent a group of organic compounds which are needed in small amount for the healthy growth and maintenance of our body. These are not synthesized by the body and are supplied in the diet. The deficiency of vitamins can be supplemented with medicines.
Match List - I with List – II.

List - I	List - II
A. Vitamin A	I. Green leafy vegetables, spinach, cabbage.
B. Vitamin B12	II. Fish liver oil, carrots, butter and milk.
C. Vitamin C	III. Egg and curd.
D. Vitamin K	IV. Citrus fruits, amla and green leafy vegetables.

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What is the structural formula for Freon-12.

The region represented by the system of inequalities \(x \geq 0 ; y \geq 0\),
\(2 x+y \geq 8\) and \(x+2 y \geq 10\) is :

When the cells from malignant tumours start invading and damaging the normal tissues and reach distant sites through blood, the process is known as :

The abundant immunoglobulin present in colostrum of mother's milk to create passive immunity in infants is:

If \(A\) is a non-singular matrix of order 3 such that \(|\operatorname{adj}(A)|=121\), then \(\left|A A^T\right|\) is equal to :

The process of copying genetic information from one strand of DNA into RNA is termed as