Question

(5×1=5)
PEDRSH VIDYA U
HALL YEARLY DECAMINATIC
IM:70
Sensueltosuction
Alavestons are compulsory. However internal choices are even in some cuestions
2) Question Paper is divided into two parts le Part & Part - B. Pars Acomprises of objective type
Questions and Part B comprises of fully subjective/ descriptive type questions,
A) Each party carry 31 marks,
iv) in part-a, Question no. 1 to 19 carry one mark each, Question no. 20 to 24 carry two marks each,
Question no. 25 & 26 carry three marks each.
v) in part-B, Question no. 27 to 30 carry two marks each, Question no. 31 to 34 carry three marks each,
and Question no. 35 & 37carry five marks each.
vi) Use lor table it required.
(Section-A)
(MCQ & Assertion Reason based Question)
Q. No. 1 to 10 are multiple Choice Questions
1. For the formation of 3.65 g of hydrogen chloride gas. What volume of hydrogen gas and chlorine gas ar
required at N.T.P. conditions?
(a) 1.12 lit. , 1.12 lit. (b) 1.12 lit. , 2.24 lit
(c) 3.65 lit. , 1.83 lit.
(d) 1 lit , 1 lit
2. Amount of copper can be obtained from 100 g of copper sulphate (CuSO) is.
(a) 39.81 g
(b) 3.9818
(c) 79.62 g
(d) 19.905 g
3. Atomic mass of two isotopes of boron is 10.01 and 11.01. The average atomic mass of boron is 10.8
of two isotopes of boron is:
(a) 10% & 90%
(b) 20% & 80%
(c) 30% & 70%
(d) 40%&E
To number of orbitals in a shell is calculated by the formulae:
(a) 2n?
(b) 3n2
The energy of electron in the first orbit of H-atom is:
a) –2.18x10-18 joule/atom
(b) -1.312 x10 joule/atom
-) +2.18x10-18 joule/atom
(d) -2.18x10-16 joule/atom
hit of H-atom is
(c) n?
(d) 4n?​

Answer 1

Answer:

GIVE ONLY ONE QUESTION