Top 100 Important Everyday Science Mcqs Set-1 Page 5

Top 100 Important Everyday Science Mcqs Set-1

81- Which of the following metals was first discovered by man?

A. Iron

B. Silver

C. Bronze

D. Copper

View Answer

Answer : D. Copper

Description

82- Carbon, diamond and graphite are together called:

A. Isomers

B. Allotropes

C. Isomorphs

D. Isotopes

View Answer

Answer : B. Allotropes

Description

83- Marsh gas is:

A. Hydrogen

B. Nitrogen

C. Ethane

D. Methane

View Answer

Answer : D. Methane

Description

84- Galvanized iron sheets have coating of:

A. Tin

B. Lead

C. Zinc

D. Chromium

View Answer

Answer : C. Zinc

Description

85- Permanent hardness of water, due to sulphates of the metals, can be destroyed by the use of:

A. Zeolites

B. Nitrates

C. Sulphonates

D. None of these

View Answer

Answer : A. Zeolites

Description

86- Which of the following is called a strategic metal?

A. Silicon

B. Germanium

C. Uranium

D. Titanium

View Answer

Answer : D. Titanium

Description

87- Among the various allotropes of carbon:

A. Diamond is the hardest, lamp black is the softest

B. Diamond is the hardest, coke is the softest

C. Coke is the hardest, graphite is the softest

D. Diamond is the hardest, graphite is the softest

View Answer

Answer : D. Diamond is the hardest, graphite is the softest

Description

88- Liquefied Petroleum Gas consists of mainly:

A. Methane, butane and propane

B. Methane, hexane and nonane

C. Ethane, hexane and nonane

D. Methane, ethane and hexane

View Answer

Answer : A. Methane, butane and propane

Description

89- Which of the following gases is used as an illuminating gas in lamps used by hawkers?

A. Acetylene

B. Hydrogen

C. Ethylene

D. Methane

View Answer

Answer : A. Acetylene

Description

90- The metal that is present in photo films is:

A. Silver

B. Magnesium

C. Platinum

D. Mercury

View Answer

Answer : A. Silver

Description

91- Which of the following is in liquid form at room temperature?

A. Lithium

B. Francium

C. Sodium

D. Cerium

View Answer

Answer : B. Francium

Description

92- Soda water contains:

A. Sulfuric acid

B. Carbon dioxide

C. Nitrous acid

D. Carbonic acid

View Answer

Answer : D. Carbonic acid

Description

93- Which of the following is not an isotope of hydrogen?

A. Tritium

B. Deuterium

C. Yttrium

D. Protium

View Answer

Answer : C. Yttrium

Description

94- Which one of the following is the basis of the modern periodic table?

A. Atomic volume

B. Atomic size

C. Atomic mass

D. Atomic number

View Answer

Answer : D. Atomic number

Description

95- Brass is an alloy of:

A. Nickel and Silver

B. Nickel and Zinc

C. Nickel and Copper

D. Zinc and Copper

View Answer

Answer : D. Zinc and Copper

Description

96- Of the following metals, which one pollutes the air of a big city?

A. Lead

B. Cadmium

C. Chromium

D. Copper

View Answer

Answer : A. Lead

Description

97- The element required for solar energy conversion is:

A. Silicon

B. Beryllium

C. Tantalum

D. Ultra-pure

View Answer

Answer : A. Silicon

Description

98- Which of the following is the correct sequence of the following elements in increasing order of their relative densities?
1. Mercury 2. Gold 3. Lead 4. Aluminum