Statement-I : Ethyne is a linear molecule.Statement-II : Electron cloud between two carbon atoms is cylindrically symmetrical about the inter nuclear axis in ethyne.A Statement-I and II both are correct. B Statement-I is correct but statement II is false C Statement-I is incorrect but statement-II is correct. D Both Statement-I & II are incorrect.

Statement-I : But-1-yne can be distinct from but 2-yne by reaction with sodium metalStatement-II : Hydrogen atom attached to triple bonded carbon atom is acidic in nature.A Statement I & II both are correct and statement II is correct explanation of statement I. B Statement I and II both are correct but statement II is not correct explanation of statement I. C Statement I is correct but statement II is false. D Both Statement I and II are incorrect.

Assertion A : Benzene is more stable than hypothetical cyclohexatriene.Reason R : The delocalized π electron cloud is attracted more strongly by nuclei of carbon atoms.In the light of the above statements, choose the correct answer from the options given below:A is true but R is false.A is false but R is true.Both A and R are correct and R is the correct explanation of A.Both A and R are correct but R is NOT the correct explanation of A.

Given below are two statements labelled as Assertion (A) and Reason (R)Assertion (A): The empirical mass of Ethene is half of its molecular mass.Reason (R ) : The empirical formula represents the simplest whole number ratio of various atomspresent in a compoundSelect the most appropriate answer from the options given below:a) Both A and R are true and R is the correct explanation of Ab) Both A and R are true but R is not the correct explanation of A.c) A is true but R is false.d) A is false but R is true.

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A) : Nitrogen has higher ionisation energy than oxygen          Reason (R) : Nitrogen has half filled orbital.A Both (A) and (R) are correct and (R) is the correct explanation of (A). B Both (A) and (R) are correct but (R) is not the correct explanation of (A) C (A) is correct but (R) is not correct D (A) is not correct but (R) is correct

The following questions consist of two statements- Assertion (A) and Reason (R).Answer these questions selecting the appropriate option given below:a) Both A and R are true and R is the correct explanation of A.b) Both A and R are true, but R is not the correct explanation of A.c) A is true, but R is false.d) A is false, but R is true.11. Assertion: The number of Electrons in the valence shell of helium atom is 2.Reason: The valency of helium is 2.12. Assertion: Protium and deuterium are isotopes.Reason: Isotopes have same mass numbers.13. Assertion: Atom is electrically neutral.Reason: A neutral particle, neutron is present in the nucleus of atom.14. Assertion: Cathode Rays get deflected towards the positive plate of electricfield.Reason: Cathode rays consist of negatively charged particles, known as electrons.15. Assertion: In Rutherford’s experiments, some of 𝛼-particles deflect by largeangles.Reason: 𝛼-particles are much heavier than the protons