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CHEMISTRY 2025
Max. Marks: 60 Time: 3 Hour
SECTION “A” MULTIPLE CHOICE QUESTIONS (MCQs)
Marks: 12
NOTE: (i) Attempt all the Questions of this Section.
(ii) Do not copy down the part questions. Write only the answer against the proper number of the Question and its part according to the question Paper.
(iii) Each question carries 1 Marks
1. Choose the correct Answer for each from the given question:
i. The unit of active mass is: *gm/cm3✓ *mol dm−4 *dm3 *mg
ii. pH value of black coffee is: * 10.2 * 12.0 * 3.8 * 5.0✓
iii. It is used for surfacing roads *Neptha *Paraffin *Coal *Bitumen ✓
iv. Protein is derived from Greek word proteios which means: *Second *First ✓ *Third *Zero
v. In the reaction N2 + 2O2 ⇌ 2NO2 equilibrium constant expression is: * |N2||O2| / 0 * |NO| / |N2||O2| * |N2||O2| / |NO|2 * |NO|2 / |N2||O2|2 ✓
vi. The functional group – COOH is used for: *Alkynes *Alcohols *Phenol *Carboxylic Acid ✓
vii. Benzene is a/an: *Inorganic compound *Heterocyclic compound *cyclic compound ✓ *Alicyclic compound
viii. Glucose is a/an: *Saccharides *Ketoses *Pentosts *aldoses ✓
ix. This vitamin helps in clotting of blood: *A *D *E *K ✓
x. It causes the production of smog: *sulphurdioxide *Carbon monoxide *Nitrogen oxide ✓ *Ozone
xi. Water which does not form lather with soap, is called: *Soft water *Polluted water *Hard water✓ *Distilled water
xii. Sensitive and technical procedure is: *Advanced Instrumental method✓ *Instrumental method *Spectroscopy method *Classical method
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