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/ Chemistry / Chemistry 2024 Set 1
CBSE Sample Paper Class 11
Chemistry 2024 Set 1 PDF
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14, Assertion (A): Addition of HCI on = is faster than
Reason (R): Alkene that can form more stable carbocation they have higher rate of addition with HX.
a) Both A and R are true and Ris the correct _b) Both A and R are true but R is not the
explanation of A. correct explanation of A.
©) Ais true but R is false. 4) Ais false but R is tru.
15, Assertion (A): Threshold frequency is a characteristic for a metal. 1
Reason (R): Threshold frequency is the maximum frequency required for the ejection of electrons from the
metal surface.
a) Both A and R are true and R is the correct b) Both A and R are true but R is not the 3
explanation of A. correct explanation of A.
©) Ais true but Ris false. 4d) Ais false but R is true,
16, Assertion (A); The balancing of chemical equations is based on the law of conservation of mass. a
Reason (R): Total mass of reactants is equal to the total mass of products.
4) Both A and Rare true and R is the correct —_b) Both A and R are true but R is not the
explanation of A. correct explanation of A.
©) Ais true but R is false. 4) Ais false but R is rue,
Section B
17, AtS00K, equilibrium constant, K., for the following reaction is 5. 2)
}Ha(9) + $1a(9) = HI(g)
‘What would be the equilibrium constant Ke forthe reaction?
2HI(g) = HAg) + I(e)
18. The electronic configuration of an element is 1s? 2s? 2p® 3s? 3p® 4s!. Locate the element in the periodic table. (2)
19, What will be the mass of one !2C atom in g? ce}
20. Unsaturated compounds undergo addition reactions. Why? 2
oR
Explain why the system are not aromatic.
©
21. Give the number of electrons in the species: Hj, Hz and O 2
Section C
22, Arrange the following sets of molecules in the decreasing order of bond angle. I
1. SF, Cla, HzO, NHy
li, CHg, NH, HO, BF
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