Assessment Test-7 Everyday Science (MCQs)

The most abundant natural Iron Oxides are:

• (A) Magnetite and Pyrite
• (B) Magnetite and Bauxite
• (C) Hematite and Pyrite
• (D) Hematite and Magnetite

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The two most abundant elements in sea water are:

• (A) Sodium and Potassium
• (B) Sodium and Calcium
• (C) Sodium and Chlorine
• (D) Chlorine and Iodine

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An electric current can produce:

• (A) Chemical effect
• (B) Magnetic effect
• (C) Heating effect
• (D) All of three

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The unit of home electricity energy consumption is:

• (A) Watt hour
• (B) Kilowatt hour
• (C) Joule hour
• (D) None of these

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The magnet always points in the same direction, if allowed to move freely i.e. towards North and South poles, because of:

• (A) Gravitational field
• (B) A lot of metal deposits on North and South Poles
• (C) Due to attraction of North Pole and repulsion of Western Pole
• (D) Earth is huge magnet

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When sound is reflected from floor, ceiling or a wall, it mixes with the original sound and changes its complexion, it is called as:

• (A) Sound
• (B) Echo
• (C) Reverberation
• (D) Noise

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The speed of sound in dry air at 20°C is about:

• (A) 130 meters per second
• (B) 230 meters per second
• (C) 330 meters per second
• (D) 430 meters per second

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The speed of light in vacuum:

• (A) 300 Million meters per second
• (B) 300 Million meters per hour
• (C) 300 Million kilometres per second
• (D) 300 Million kilometres per hour

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The time, light takes from the Sun to reach Earth is:

• (A) 8 minutes
• (B) 25 minutes
• (C) 45 minutes
• (D) 48 minutes

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Light from the Sun travels a distance before it reaches the Earth:

• (A) 50 million Km
• (B) 100 million Km
• (C) 150 million Km
• (D) 200 million Km

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