Which one of the following does not have sp2 hybridised carb

Subject

Chemistry

Class

JEE Class 12

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

11.

The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 kJ mol respectively. The enthalpy of formation of carbon monoxide per mole is

  • 110.5 kJ

  • 676.5 kJ

  • -676.5 kJ

  • -110.5 kJ


Advertisement

12.

Which one of the following does not have sp2 hybridised carbon ?

  • Acetone

  • Acetic acid

  • Acetonitrile

  • Acetamide


C.

Acetonitrile

Among the given options, acetonitrile does not have sp2 hybridization.


Advertisement
13.

The temperature dependence of rate constant (k) of a chemical reaction is written in terms of Arrhenius equation, k = Ae-E*/ RT. Activation energy (E*) of the reaction can be calculated by plating

  • log k vs 1T

  • log k vs 1log T

  • k vs T

  • k vs 1log T


14.

Formation of a solution from two components can be considered as

(1) pure solvent → separated solvent molecules, H1

(2) pure solute → separated solute molecules, H2

(3) separated solvent and solute molecules → solution, H

Solution so formed will be ideal if

  • Hsoln = H1 - H2 - H3

  • Hsoln = H3 - H1 - H2

  • Hsoln = H1 + H2 + H3

  • Hsoln = H1 + H2 - H3


Advertisement
15.

Among the following, the pair in which the two species are not isostructural, is

  • SiF4 and SF4

  • IO3- and XeO3

  • BH4- and NH4+

  • PF6- and SF6


16.

The maximum number of molecule is present in

  • 15 L of H2 gas at STP

  • 5 L of N2 gas at STP

  • 0.5 g of H2 gas

  • 10 g of O2 gas


17.

Ionic radii are

  • inversely proportional to effective nuclear charge

  • inversely proportional to square of effective nuclear charge

  • directly proportional to effective nuclear charge

  • directly proportional to square of effective nuclear charge


18.

The helical structure of protein is stabilized by

  • dipeptide bond

  • hydrogen bonds

  • ether bonds

  • peptide bonds


Advertisement
19.

The radioactive isotope Co2760 which is used in the treatment of cancer can be made by (n, p) reaction. For this reaction the target nucleus is

  • Ni2859

  • Co2759

  • Ni2860

  • Co2760


20.

The work done during the expansion of a gas from a volume of 4 dm3 to 6 dm3 against a constant external pressure of 3 atm, is

  • -6 J

  • -608 J

  • +304 J

  • -304 J


Advertisement