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JEE Solutions PYQs with Solutions

18 previous year questions from Solutions (JEE Main & Advanced NSEC) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

18 questionsNSECAnswers + solutions

About Solutions PYQs

Solutions has 18 previous year questions in the Quantrex Academy JEE Main & Advanced NSEC bank. The 18 questions in this list come from Olympiad workbook (18). Each question opens on its own page with the options, the correct answer and the worked solution where available.

Solutions questions with solutions

When 100 g each of the salts NaCl, MgSO_4, Ca(NO_3)_2, ~K_2 CO_3 , were dissolved separately in 1.0 kg of water, the solution with the highest boiling point will be of

Olympiad workbook Solution View → 2

About sea water, which of the following statement/s is/are correct? I. Frozen sea water melts at a lower temperature than pure ice II. Boiling point of sea water increases as it

Olympiad workbook Solution View → 3

A student intended to prepare 1000 mL of a 10 ppm solution of K^ + from KCl . He made appropriate calculations, weighed the salt accordingly and prepared the solution. However

Olympiad workbook Solution View → 4

A solution of CuSO_4 · 5 H_2 O in methanol has [Cu^ 2+ ]=1.00 mg per 1000 g of methanol. The molarity of Cu^ 2+ in this solution is Y × 10^ -5 ~mol ~L^ -1 . Y is : (. Given

Olympiad workbook Solution View → 5

In cold climate, the water in a radiator of a car gets frozen causing damage to the radiator. Ethylene glycol is used as an antifreezing agent. The amount of ethylene glycol that

Olympiad workbook Solution View → 6

The mass (g) of NaCl that has to be dissolved to reduce the vapour pressure of 100 g of water by 10 \% (. Molar mass of .NaCl=58.5 ~g ~mol^ -1 ) is

Olympiad workbook Solution View → 7

In reverse osmosis the flow of solvent across semi permeable membrane occurs

Olympiad workbook Solution View → 8

When a certain amount of a univalent salt AB (molar mass =54 ~g ~mol^ -1 ) was dissolved in 0.1 dm^3 of water, the relative lowering of the vapour pressure was found to be 3.55 \%

Olympiad workbook Solution View → 9

At room temperature, NaCl(s) and KCl(s) were taken in equal masses and dissolved in equal volumes of water in two separate closed containers I and II respectively. Of the

Olympiad workbook Solution View → 10

In cold climate, the water in a radiator of a car gets frozen causing damage to the radiator. Ethylene glycol is used as an antifreezing agent. The amount of ethylene glycol that

Olympiad workbook Solution View → 11

The mass (g) of NaCl that has to be dissolved to reduce the vapour pressure of 100 g of water by 10 \% (. Molar mass of .NaCl=58.5 ~g ~mol^ -1 ) is

Olympiad workbook Solution View → 12

A student intended to prepare 1000 mL of a 10 ppm solution of K^ + from KCl . He made appropriate calculations, weighed the salt accordingly and prepared the solution. However

Olympiad workbook Solution View → 13

At room temperature, NaCl(s) and KCl(s) were taken in equal masses and dissolved in equal volumes of water in two separate closed containers I and II respectively. Of the

Olympiad workbook Solution View → 14

When 100 g each of the salts NaCl, MgSO_4, Ca(NO_3)_2, ~K_2 CO_3 , were dissolved separately in 1.0 kg of water, the solution with the highest boiling point will be of

Olympiad workbook Solution View → 15

A solution of CuSO_4 · 5 H_2 O in methanol has [Cu^ 2+ ]=1.00 mg per 1000 g of methanol. The molarity of Cu^ 2+ in this solution is Y × 10^ -5 ~mol ~L^ -1 . Y is : (. Given

Olympiad workbook Solution View → 16

About sea water, which of the following statement/s is/are correct? I. Frozen sea water melts at a lower temperature than pure ice II. Boiling point of sea water increases as it

Olympiad workbook Solution View → 17

In reverse osmosis the flow of solvent across semi permeable membrane occurs

Olympiad workbook Solution View → 18

When a certain amount of a univalent salt AB (molar mass =54 ~g ~mol^ -1 ) was dissolved in 0.1 dm^3 of water, the relative lowering of the vapour pressure was found to be 3.55 \%

Olympiad workbook Solution View →

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Main Solutions list

The larger JEE Solutions list is under Chemistry (493 questions).

Related JEE NSEC chapters

Some Basic Concepts of Chemistry (60)Electrochemistry (52)Thermodynamics (C) (50)Structure of Atom (50)General Organic Chemistry (44)Chemical Kinetics (42)Chemical Bonding and Molecular Structure (34)Coordination Compounds (33)Hydrocarbons (29)Solid State (22)Ionic Equilibrium (20)Alcohols Phenols and Ethers (19)

Solutions in other exams

NEET Solutions (560)BITSAT Solutions (17)