JEE Chemistry Solved Question Paper 2015 | Previous Year Papers | Zigya

Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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1.

For which among the following reactions, change in entropy is less than zero?

  • Sublimation of iodine

  • Dissociation of hydrogen

  • Formation of water

  • Thermal decomposition of calcium carbonate


2.

Select a ferromagnetic material from the following.

  • Dioxygen

  • Chromium (IV) oxide

  • Benzene

  • Dihydrogen monoxide


3.

What is the volume of water consumed during acid hydrolysis of 1.368 kg of sucrose?

(Given : molar masses of sucrose = 342, water = 18, density of water = 1g/cm3)

  • 0.072 dm3

  • 0.070 dm3

  • 0.18 dm3

  • 0.018 dm3


4.

Identify a metalloid from the following list of elements.

  • Carbon

  • Neon

  • Sodium

  • Tellurium


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5.

Which among the following is a feature of adiabatic expansion?

  • V < 0

  • U < 0

  • U > 0

  • T = 0


6.

Molarity is defined as

  • the number of moles of solute dissolved in 1 dm3 of the solution

  • the number of moles of solute dissolved in 1 kg of solvent

  • the number of moles of solute dissolved in 1 dm3 of the solvent

  • the number of moles of solute dissolved in 100 ml of the solvent


7.

What is the amount of work done when two moles of ideal gas is compressed from a volume of 1m3 to 10 dm3 at 300 K against a pressure of 100 kPa?

  • 99 kJ

  • -99kJ

  • 114.9 kJ

  • -114.9 kJ


8.

Which of the following compounds is most acidic in nature?

  • 4-chlorobutanoic acid

  • 3-chlorobutanoic acid

  • 2-chlorobutanoic acid

  • Butanoic acid


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9.

[Cr(NH3)6][Cr(SCN)6] and [Cr(NH3)2(SCN)4] [Cr(NH3)4(SCN)2] are the examples of what type of isomerism?

  • Ionisation isomerism

  • Linkage isomerism

  • Coordination isomerism

  • Solvate isomerism


10.

Which among the following functional groups has been given the highest priority while assigning R-S configuration?

  • -C6H5

  • -CN

  • -C2H5

  • -CH3


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