Question

QI) MULTIPLE-CHOICE QUESTION-
(imx29)
i)Which of the following gas contains maximum number of molecules?
a) 1g of Nitrogen. b)lg of Oxygen. C) ig of Hydrogen. D) 18 of Helium
Which of the following represents the correct chemical formula of hydrogen
sulphite?
a)H.SO, b) H.SO
c)H.S. d) a),(50.).
Q2) Assertion and Reason Questions:
(
13)
i) ASSERTION: Molecules of helium are made up of only one atom
REASON: Helium atoms have completely filled valance shell,
ASSERTION: One atomic mass unit is equal to 1/12- the mass of one atom of carbon-12.
REASON: Carbon-12 is the isotope of the element carbon
ni) ASSERTION: Atoms of different elements combine together to form molecules.
REASON Molecules are charged species of a compound​

Answer 1

Answer:

QI) MULTIPLE-CHOICE QUESTION-

(imx29)

i)Which of the following gas contains maximum number of molecules?

a) 1g of Nitrogen. b)lg of Oxygen. C) ig of Hydrogen. D) 18 of Helium

Which of the following represents the correct chemical formula of hydrogen

sulphite?

a)H.SO, b) H.SO

c)H.S. d) a),(50.).

Q2) Assertion and Reason Questions:

(

13)

i) ASSERTION: Molecules of helium are made up of only one atom

REASON: Helium atoms have completely filled valance shell,

ASSERTION: One atomic mass unit is equal to 1/12- the mass of one atom of carbon-12.

REASON: Carbon-12 is the isotope of the element carbon

ni) ASSERTION: Atoms of different elements combine together to form molecules.

REASON Molecules are charged species of a compound

Answer 2

Answer:

ques 2 :- (ii) Both Assertion and Reason are correct and Reason is the correct explanation for Assertion