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Metals and Non Metals Class 10 mcq test. We covered all the Metals and Non Metals Class 10 mcq test in this post for free so that you can practice well for the exam.
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Metals and Non Metals Class 10 Objective mcq test for Students
The most commonly used substances in fluorescent tubes are:
A. Sodium oxide and Argon
B. Sodium vapour and Neon
C. Mercury vapour and Argon
D. Mercuric oxide and Neon
Option c – Mercury vapour and Argon
Which of the following Metals is typically found in its native state?
A. Aluminium
B. Gold
C. Chromium
D. Zinc
Option b – Gold
Arrange the following substances in decreasing order of density:
A. Steel > Mercury > Gold
B. Gold > Mercury > Steel
C. Steel > Gold > Mercury
D. Gold > Steel > Mercury
Option b – Gold > Mercury > Steel
How many carats does pure gold have?
A. 22
B. 24
C. 28
D. 20
Option b – 24
The primary components of a pearl are:
A. Calcium carbonate and magnesium carbonate
B. Aragonite and conchiolin
C. Ammonium sulphate and sodium carbonate
D. Calcium oxide and ammonium chloride
Option b – Aragonite and conchiolin
Pearls mainly consist of:
A. Calcium oxalate
B. Calcium sulphate
C. Calcium carbonate
D. Calcium oxide
Option c – Calcium carbonate
Chemically, rubies and sapphires are:
A. Silicon dioxide
B. Aluminium oxide
C. Lead tetroxide
D. Boron nitride
Option b – Aluminium oxide
Modern yellow street lamps commonly use:
A. Sodium
B. Neon
C. Hydrogen
D. Nitrogen
Option a – Sodium
Sodium vapour lamps are preferred for street lighting because:
A. They are inexpensive
B. Their Light is nearly monochromatic and does not disperse in water droplets
C. They are easy on the eyes
D. They produce very bright illumination
Option b – Their Light is nearly monochromatic and does not disperse in water droplets
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