CBSE 12th Board Exam 2023 Chemistry Question Papers
#1
CBSE 10th Annual Exam 2023 Chemistry Question papers can be downloaded easily from the attachments.

Some sample questions that came for the exam are:

1. Which of the following characteristics of transition metals is associated with their catalytic activity ?
(a) Paramagnetic nature (b) Colour of hydrated ions (c ) High enthalpy of atomisation (d) Variable oxidation states

2. Give reasons :
(i) Mercury cell delivers a constant potential during its life time.
(ii) In the experimental determination of electrolytic conductance, Direct Current (DC) is not used.

3. Define Pseudo first order reaction with an example.

4. The ions of metals of Group 12 (Zn, Cd and Hg) have completely filled d orbitals and so they :
(a) behave like semiconductors
(b) are very high melting solids
(c ) do not behave like transition metals
(d) behave like superconductors

5. What are the common types of secondary structures of proteins ? Write any two forces which stabilise the secondary and tertiary structures of protein.

6. Define denaturation of protein with an example. During denaturation which structures of protein lose their biological activity ?

Get the detailed question papers from the links below.


Attached Files
.pdf   CBSE 12th Board Exam 2023 Chemistry question paper 1.pdf (Size: 1.06 MB / Downloads: 257)
.pdf   CBSE 12th Board Exam 2023 Chemistry question paper 2.pdf (Size: 2.24 MB / Downloads: 228)
.pdf   CBSE 12th Board Exam 2023 Chemistry question paper 3.pdf (Size: 1.16 MB / Downloads: 219)
.pdf   CBSE 12th Board Exam 2023 Chemistry question paper 4.pdf (Size: 1.24 MB / Downloads: 218)
.pdf   CBSE 12th Board Exam 2023 Chemistry question paper 5.pdf (Size: 2.41 MB / Downloads: 232)
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