Assertion (A) : Haemetite is concentrated by magnetic separation process.Reason (R) : Haematile is an oxide ore.(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

Which of the following statements is FALSE regarding the mineral selenium?

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

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

Assertion (A): In case of burning, air and moisture are necessary.Reason(R): Oxygen is a supporter of combustion.(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