Azeotropes are binary mixtures having

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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

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The carbonyl group of aldehydes and ketones is highly polar. The positively charged carbon is readily attacked by electron-rich nucleophile and the negatively charged oxygen atom is attacked by an electro-deficient electrophile. Aldehydes and ketones undergo nucleophilic addition reactions in the presence of acid or a base. The mechanism involves attack of a nucleophile on the electron deficient carbonyl carbon to form a tetrahedral intermediate. A new bond is formed between the carbon and oxygen. Protonation of the anion furnished by the reaction medium yields neutral addition product. The addition product is same whether the reaction is catalyzed by acid or a base. For example in the presence of base aldehydes and ketones react with hydrogen cyanide to form cyanohydrin.
Which of the following compounds will undergo nucleophilic addition readily?

Match List - I with List - II.

List - I	List - II
(A) Zero order reaction	(I) \(s ^{-1}\)
(B) First order reaction	(II) \(mol ^{-2} L^2 s^{-1}\)
(C) Second order reaction	(III) \(mol L ^{-1} s^{-1}\)
(D) Third order reaction	(IV) \(mol ^{-1} Ls ^{-1}\)

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Arrange the following compounds in increasing order of their acidity :
(A) Phenol
(B) 4 -methylphenol
(C) 3-nitrophenol
(D) 4-nitrophenol
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Which of the following pair of compounds exhibits the same color in aqueous solution?

\(\text{C}_3\text{H}_6\text{O}\) does not form a silver mirror with Tollen's reagent but forms an oxime with hydroxylamine. It can give positive:

Which of the following is a non - infectious disease?

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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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The unit of conductance(G) is

In what ratio should a grocery shopkeeper mix two varieties of pulses worth Rs. 85 per kg and Rs. 100 per kg respectively, so as to get a mixture worth Rs. 92 per kg?

Monochromatic lights of wavelengths \(6 2 0 ~ n m\) and \(6 2 6 ~ n m\), respectively are used to study diffraction at a single slit of aperture \(0 . 7 ~ m m\). The distance between the slit and the screen is 1.8 m . The separation between the positions of the first maxima of the diffraction pattern obtained in the two cases is

Let \(\vec{a}=3 \hat{i}+\hat{j}-4 \hat{k}\) and \(\vec{b}=6 \hat{i}+5 \hat{j}-2 \hat{k}\) be two vectors.
Then a vector perpendicular to both \(\vec{a}\) and \(\vec{b}\) with magnitude 3 units is :