Class 10 Chemistry Certification MCQs – Practice Test 11 (Chapter 7)

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Environmental Chemistry II Water Quiz – Practice Test 11 PDF Download

MCQ 51: Which of the following is a disease that proceeds from obstruction of the liver?

cholera
dysentery
jaundice
hepatitis

MCQ 52: How much percentage of the Earth's crust is covered by water?

0.69
0.71
0.8
0.75

MCQ 53: Hard water can block radiators due to the formation of:

insoluble calcium and magnesium salts
insoluble sodium salts
insoluble phosphate salts
insoluble potassium salts

MCQ 54: What is the total amount of water present on Earth?

1.33 billion cubic kilometers
1.33 billion cubic meters
1.33 million cubic kilometers
1.33 million cubic meters

MCQ 55: Ice floats on top of the water because:

water expands on freezing
water contracts on freezing
ice is lighter than water
none of above

Class 10 Chemistry Quiz App & e-Book – Environmental Chemistry II Water Certification Guide

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Environmental Chemistry II Water MCQs

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