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Everyday Science

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191

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Light and Optics

easy
Everyday Science

When white light is passed through a prism, it splits into ________ colours.

A
5
B
6
C
7
D
8
Explanation and memory cue

White light splits into seven distinct colors when passed through a prism, commonly known as the colors of the visible spectrum: red, orange, yellow, green, blue, indigo, and violet.

192

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Sun / Astronomy

easy
Everyday Science

The outermost layer of the Sun is called _________?

A
Coach
B
Core
C
Corona
D
Comma
Explanation and memory cue

The outermost layer of the Sun is called the corona, which is the Sun's outer atmosphere visible during a solar eclipse. The other options do not refer to any layer of the Sun.

193

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Space Missions

easy
Everyday Science

NASA’s Mars rover, ________, has been exploring Mars since 2012.

A
Diversity
B
Serenity
C
Curiosity
D
Divinity
Explanation and memory cue

NASA's Mars rover named Curiosity has been exploring Mars since its landing in 2012. The other options are not names of Mars rovers.

194

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Properties Of Water

easy
Everyday Science

The density of water is _______?

A
1 g/cm³
B
1.5 g/cm³
C
2 g/cm³
D
none of these
Explanation and memory cue

The density of water at standard temperature and pressure is approximately 1 gram per cubic centimeter (1 g/cm³), which is a well-established scientific fact.

195

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Human Digestive System

easy
Everyday Science

The stomach stores the ________?

A
enzyme
B
Food
C
HCl
D
None of These
Explanation and memory cue

The stomach primarily functions as a storage organ for food before it is digested. It temporarily holds the ingested food, mixing it with gastric juices for digestion.

196

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Environment / Climate

easy
Everyday Science

Burning of fossil fuels results in __________?

A
Increased oxygen level
B
Decreases greenhouse gases
C
Increased greenhouse gases
D
Increased ethane level
Explanation and memory cue

Burning fossil fuels releases carbon dioxide and other greenhouse gases into the atmosphere, which increases the greenhouse effect and contributes to global warming.

197

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Planets

easy
Everyday Science

Which planets in the solar system are called gas giants?

A
Outer planets (Jupiter, Saturn and Uranus)
B
Outer planets (Jupiter, Neptune and Uranus)
C
Outer planets (Jupiter and Saturn)
D
Inner planets (Mercury and Earth)
Explanation and memory cue

The gas giants in the solar system are Jupiter and Saturn. Uranus and Neptune are often classified as "ice giants" due to their different compositions, which include more ices such as water, ammonia, and methane, compared to the primarily hydrogen and helium composition of Jupiter and Saturn. Therefore, the traditional gas giants are Jupiter and Saturn, which corresponds to option C. Options A and B incorrectly include Uranus and/or Neptune as gas giants, and option D incorrectly lists inner planets.

198

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Vitamins And Deficiency Diseases

easy
Everyday Science

Deficiency of Vitamin D results in _________?

A
night blindness
B
rickets
C
scurvy
D
hair fall
Explanation and memory cue

Vitamin D deficiency leads to rickets, a condition characterized by weak or soft bones in children due to impaired calcium absorption. Night blindness is caused by vitamin A deficiency, scurvy by vitamin C deficiency, and hair fall is not directly linked to vitamin D deficiency.

199

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Fuels And Energy

easy
Everyday Science

What does CNG stand for?

A
Converted Natural Gas
B
Conduced Natural Gas
C
Conducted Natural Gas
D
Compressed Natural Gas
Explanation and memory cue

CNG stands for Compressed Natural Gas, which is a fuel gas consisting primarily of methane compressed to less than 1% of the volume it occupies at standard atmospheric pressure.

200

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Optics

medium
Everyday Science

Which type of glass can cut ultraviolet rays?

A
Jena Glass
B
Soda Glass
C
Pyrex Glass
D
Crookes Glass
Explanation and memory cue

Crookes glass is specially designed to block ultraviolet rays, making it effective in cutting UV radiation. The other types of glass listed do not have this specific property.