Introduction to Chemistry Class 6. We covered all the Introduction to Chemistry Class 6 MCQs in this post for free so that you can practice well for the exam.
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Introduction to Chemistry Class 6 Objective for Students
Which is the purest form of iron?
(a) Pig iron.
(b) Cast iron.
(c) Wrought iron.
(d) Steel.
Option c – Wrought iron
Which of the following metals is most ductile in nature?
(a) Copper.
(b) Silver.
(c) Gold.
(d) Aluminium.
Option c – Gold
An amalgam of metal has which other element?
(a) C.
(b) Au.
(c) Ag.
(d) Hg.
Option d – Hg
Rust needs three components to occur, i.e.
(a) steel, iron, and oxygen.
(b) iron, oxygen, and moisture.
(c) iron, nitrogen, and moisture.
(d) helium, hydrogen, and nitrogen.
Option b – iron, oxygen, and moisture
The first metal used by man was
(a) gold.
(b) silver.
(c) copper.
(d) iron.
Option c – copper
Iron sheet kept in moist air covered with rust. Rust is
(a) an element.
(b) a compound.
(c) a mixture of iron and dust.
(d) a mixture of iron, oxygen, and water.
Option b – a compound
Which of the following metals (shown by its symbol) is generally used for making filaments of a bulb?
(a) Fe.
(b) Au.
(c) Ag.
(d) W.
Option d – W
Which one of the following materials contains calcium?
(a) China clay.
(b) Corundum.
(c) Gypsum.
(d) Talc.
Option c – Gypsum
Which one of the following is not true for bleaching powder?
(a) It is used as a reducing agent in chemical industries.
(b) It is used for bleaching wood pulp in paper factories.
(c) It is used for disinfecting drinking water.
(d) It is used for bleaching linen in the textile industry.
Option a – It is used as a reducing agent in chemical industries
Calcium sulfate dihydrate is commonly known as
(a) gypsum.
(b) glass.
(c) asbestos.
(d) limestone.
Option a – gypsum
The chemical composition of cement is
(a) limestone and clay.
(b) limestone, clay, and gypsum.
(c) limestone and gypsum.
(d) clay and gypsum.
Option b – limestone, clay, and gypsum
Which one among the following is the main ingredient in cement?
(a) Gypsum.
(b) Limestone.
(c) Clay.
(d) Ash.
Option b – Limestone
(a) One.
(b) Two.
(c) Five.
(d) Ten.
Option a – One
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