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

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

Directions: In the following questions, a statement of assertion (A) is followed by astatement of reason (R). Mark the correct choice as:(a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation ofassertion (A).(b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation ofassertion (A).(c) Assertion (A) is true but reason (R) is false.(d) Assertion (A) is false but reason (R) is true.4. Assertion : Cell wall is a non-living part of the cell.Reason : It offers protection, definite shape and support. ( )5. Assertion- A cell of meristem tissue is very active.Reason- Meristem tissue is dividing tissue. ( )6. Assertion: Legumes increases the soil fertility.Reason: Microbes in the root nodules of leguminous plants fix atmospheric nitrogen

(a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation assertion (A).(b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation ofassertion (A).(c)Assertion (A) is true but reason (R) is false.(d)Assertion (A) is false but reason (R) is true.7. Assertion : Sum of two irrational numbers 2 + √3 and 4 + √3 is irrational number.Reason : Sum of two irrational numbers is always an irrational numbe

a) Both assertion and reason are correct and reason is the correct explanation of assertionb) Both assertion and reason are correct but reason is not the correct explanation ofassertion.c) Assertion is true, reason is falsed) Assertion is false, reason is true10 Assertion: The standard unit for expressing the mass of an atom is ‘u.’Reason: ‘u’ is also called unified mass

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) :Assertion (A) : NH3 gas is more easily liquefiable than CO2 gas.Reason (R) : NH3 gas has higher critical temperature than that of CO2 gas.Both (A) and (R) are true and (R) is the correct explanation of (A)Both (A) and (R) are true and (R) is not the correct explanation of (A)(A) is true but (R) is falseBoth (A) and (R) is false