On warming an aldehyde with freshly prepared ammonical silver nitrate solution (Tollen's reagent) a bright silver mirror is produced due to formation of:

What are the two monosaccharides which are obtained by hydrolysis of lactose sugar?

Match List - I with List - II.

List - I	List - II
(A) \(XeF _6\)	(I) Disproportionation Reaction
(B) Liquid Helium	(II) Thermodynamically unstable
(C) \(FNO _2\)	(III) MRI
(D) \(O _3\)	(IV) Distorted octahedral

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Select the correct statements from the following :
(A) EDTA is used in the treatment of lead poisoning
(B) vitamin B 12 is a coordination complex of Co
(C) chlorophyll is a coordination complex of Fe
(D) Wilkinson catalyst is a rhodium complex used for hydrogenation of alkenes
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Match List-l with List-II

List-I(Sugar)	List-II(Example)
(A) Invert Sugar	(I) Lactose
(B) Milk Sugar	(II) Sucrose
(C) Dextrose	(III) Fructose
(D) Ketohexose	(IV) Glucose

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Match List-I with List-I

LIST – I (Compounds)	LIST – II (Uses)
(A) Dichloromethane	(I) Freon R 22
(B) Trichloromethane	(II) Synthesis of chlorofluorocarbons
(C) Triiodomethane	(III) Propellant
(D) Tetrachloromethane	(IV) Antiseptic

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Read the passage carefully and answer the questions
Ethers with the general formula \(C _n H _{2 n+2} O\) and functional group C-O-C may be divided as symmetrical and unsymmetrical.
Lower symmetrical ether may be obtained by the dehydration of alcohols at low temperatures in the presence of protic acids,
such as \(H _2 SO _4\) and \(H _3 PO _4\) whereas at high temperature intramolecular dehydration takes place.
Formation of ether from primary alcohols is also accompanied by the formation of small amount of alkenes.
Due to the steric hinderance, secondary and tertiary alcohols undergo elimination reaction rather than substitution reaction yielding alkene as major product. Ethers can also be obtained by heating alkyl halides with sodium or potassium alkoxides.
Substituted Ethers (secondary & tertiary) can also be prepared using this method.
If primary halides are replaced with secondary and tertiary halides, alkenes are the major products.
The major product in the following reaction is \(ROH + HOR \xrightarrow{ H _2 SO _4, 140^{\circ} C }\)

The adaptive radiation is represented by which of the following?
(A) Darwin's finches
(B) Koala and Wombat
(C) Tiger cat and Sugar glider
(D) Spotted cuscus and lemur
(E) Anteater and Numbat
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A plano convex lens is made of material having refractive index 1.8. If the radius of curvature of the curved surface is 80 cm, then focal length of the lens is :

If \(y=\frac{1}{1+x^{b-a}+x^{a-a}}+\frac{1}{1+x^{a-b}+x^{a-b}}+\frac{1}{1+x^{a-c}+x^{b-c}}\) then \(\frac{d^2 y}{d x^2}\) is:

A plane wave is incident on a concave mirror of radius R. The shape of the reflected wavefront will be

Which solutions will have the highest boiling point?

When sodium chromate is acidified with sulfuric acid and then further treated with potassium chloride, we obtain…