1 PUC Chemistry Model Question Paper. We covered all the 1 PUC Chemistry Model Question Paper MCQs in this post for free so that you can practice well for the exam.
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1 PUC Chemistry Model Objective Question Paper for Students
Which one of the following is not a colloid?
(a) Milk.
(b) Mud.
(c) Butter.
(d) Boric acid.
Option d – Boric acid
Which one of the following is not an allotrope of carbon?
(a) Coal.
(b) Diamond.
(c) Graphite.
(d) Graphene.
Option a – Coal
In paper manufacturing, degumming of the raw material is done using:
(a) Sulphuric acid.
(b) Bleaching powder.
(c) Caustic soda.
(d) Nitric acid.
Option c – Caustic soda
Which one of the following elements does not form solid hydrogen carbonate?
(a) Sodium.
(b) Potassium.
(c) Caesium.
(d) Lithium.
Option d – Lithium
In the gamma decay of a nucleus:
(a) The mass number of the nucleus changes whereas its atomic number does not change.
(b) The mass number of the nucleus does not change whereas its atomic number changes.
(c) Both the mass number and the atomic number of the nucleus change.
(d) Neither the mass number nor the atomic number of the nucleus changes.
Option d – Neither the mass number nor the atomic number of the nucleus changes
Which one of the following statements is not correct?
(a) Bleaching powder is prepared by the action of chlorine on dry slaked lime [Ca(OH)₂].
(b) Bleaching powder acts as a reducing agent in many chemical industries.
(c) Bleaching powder is also known as chlorinated lime.
(d) Bleaching powder is used for disinfecting drinking water.
Option b – Bleaching powder acts as a reducing agent in many chemical industries
Which one of the following statements is not correct?
(a) Graphite is a non-metal.
(b) Graphite is an allotrope of carbon.
(c) Graphite is a conductor of electricity.
(d) Graphite has a tetrahedral structure.
Option d – Graphite has a tetrahedral structure
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