The mass percentage of a component of a solution is defined as:

Arrange the following in the increasing order of oxidation state of nitrogen :
(A) \(NO\)
(B) \(NO_2\)
(C) \(N_2O_5\)
(D) \(N_2O\)
(E) \(N_2O_3\)
Choose the correct answer from the options given below :

Read the passage carefully and answer the Questions
Aldehydes and ketones are important organic compounds prepared mainly by oxidation of alcohols. Primary alcohols give aldehyde and secondary alcohols yield ketones. Aldehydes can also be formed by partial reduction of acid chlorides, reduction
of esters or by Gattermann-Koch reaction. Ketones are prepared by Friedel-Craft's acylation, hydration of alkyne and reaction of Grignard's reagent with nitriles. Chemically, aldehydes and ketones are reactive in nature due to the carbonyl group and undergo nucleophilic addition reactions. Aldehydes are more reactive than ketones and can be oxidized to carboxylic acids, while both can be reduced to alcohols or hydrocarbons and exhibit condensation reaction.
Hydration of propyne in the presence of \(H _2 SO _4\) and \(HgSO _4\) gives

During bromination of phenol, Lewis acid is not necessary required because of :

Match List - I and List - II

LIST – I (Name of vitamins)	LIST – II (Deficiency Disesse)
(A) Vitamin - A	(I) Increase in fragility of RBC
(B) Vitamin - E	(II) Increased blood clotting time
(C) Vitamin - C	(III) Xerophthalmia
(D) Vitamin - K	(IV) Scurvy

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Match List-I with List-II

List-I (Structure of ether)	List-II (Common name)
(A) \(C_{6}H_{5}OCH_{2}CH_{3}\)	(I) Methyl n-propyl ether
(B) \(C_{6}H_{5}O(CH_{2})_{3}CH_{3}\)	(II) Methyl phenyl ether
(C) \(C_{6}H_{5}OCH_{3}\)	(III) n-Heptyl phenyl ether
(D) \(CH_{3}OCH_{2}CH_{2}CH_{3}\)	(IV) Ethyl phenyl ether
(D) \(CH_{3}OCH_{2}CH_{2}CH_{3}\)	(IV) Ethyl phenyl ether

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Read the passage carefully and answer the Questions
Carbonyl compounds such as aldehydes, ketones, and carboxylic acids play an important role in the biochemical process of plants and animal kingdom.
Many aldehydes and ketones find applications in dye, perfumery and other industries.
The carbonyl carbon atom is \(s p^2\)-hybridized forming three sigma and one pi-bond with oxygen.
C-O bonds are polar bond due to high electronegativity of oxygen than carbon.
Hence the carbonyl carbon behaves as an electrophilic center and oxygen as a nucleophilic centre.
Primary and secondary alcohols yield aldehydes and ketones respectively upon oxidation with variety of oxidizing agents.
The boiling points of aldehydes and ketones differ from hydrocarbons and ethers.
Aldehydes and ketones undergo nucleophilic addition reaction due to presence of electrophilic carbonyl carbon.
Nucleophile and a proton add across the carbon oxygen double bond.
Formalin which is used to preserve biological specimen is an aqueous solution of

A long solenoid is formed by winding 40 turns/cm. The current required to produce a magnetic field of 22 mT inside the solenoid will be (Take \( \mu_0 = 4\pi \times 10^{-7} \, Tm A^{-1} \))

Answer the question on the basis of passage given below :
Nitrogen differs from rest of the members of group 15 due to its small size, high electronegativity, high ionization enthalpy and non-availability of d orbitals. Nitrogen has unique ability to form pa - pa multiple bonds with itself and with other elements having small size and high electronegativity. Heavier elements of this group do not form pa - pr bonds as their atomic orbitals are so large and diffuse that they cannot have effective overlapping.|
Match List I with List II.

LIST I (Nitrogen oxides)	LIST II (Oxidation state)
A. \(N _2 O\)	\(I. +3\)
B. \(N _2 O _3\)	\(II. +5\)
C. \(N _2 O _4\)	\(III. +1\)
D. \(N _2 O _5\)	\(IV. +4\)

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The function \(f(x)=[x]\), where \([x]\) denotes the greatest integer function, is continuous at \(x=\)
(A) 2.9
(B) 5
(C) -3
(D) 6.5
Choose the correct answer from the options given below:

The five month moving averages for the following data

Month (rth)	43	44	45	46	47	48	49	50	51
Actual Demand	105	106	110	110	114	121	130	128	137

is :

'Species richness contributes to the well being of an ecosystem' was explained through an analogy the rivet popper hypothesis'. The hypothesis was given by :

The specific DNA sequence which is responsible for initiation of replication is known as: