1st PUC Chemistry Model Question Paper. We covered all the 1st PUC Chemistry Model Question Paper MCQs in this post for free so that you can practice well for the exam.
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1st PUC Chemistry Model Objective Question Paper for Students
Losing eyesight after consuming spurious liquor (bhejal) is due to its adulteration by:
(a) Methanol.
(b) Acetaldehyde.
(c) Drug.
(d) Acidic moiety.
Option a – Methanol
Fuse wires of appropriate thickness improve their efficiency to prevent damage. These wires are made up of:
(a) Pure zinc.
(b) Pure lead.
(c) Alloy of lead and tin.
(d) Alloy of lead and zinc.
Option c – Alloy of lead and tin
Which of the following is/are used as a disinfectant for water?
(a) Ozone.
(b) Chlorine dioxide.
(c) Chloramine.
(d) All of these.
Option d – All of these
Pungency in chilies is due to the presence of:
(a) Lycopene.
(b) Capsaicin.
(c) Carotene.
(d) Anthocyanin.
Option b – Capsaicin
Which among the following leaked during the Bhopal gas tragedy in 1984?
(a) Methyl isocyanide.
(b) Methyl isocyanate.
(c) Methyl isochloride.
(d) Methyl isochlorate.
Option b – Methyl isocyanate
In the manufacture of Vanaspati ghee from vegetable oils, which among the following gases is used?
(a) Nitrogen.
(b) Carbon dioxide.
(c) Hydrogen.
(d) Neon.
Option c – Hydrogen
Soap and detergents help remove dirt from clothes. They do so because of having two parts:
(a) Hydrophilic, neutrophilic.
(b) Both are hydrophobic.
(c) Hydrophilic and hydrophobic.
(d) Neutrophilic, hydrophobic.
Option c – Hydrophilic and hydrophobic
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