Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

The ionosphere, located within the thermosphere, extends:

A. From 60-300 km above Earth's surface. B. From 50-200 km above Earth's surface. C. From 50-300 km above Earth's surface. D. None of the above.

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Explanation

The ionosphere, a layer of Earth's atmosphere, extends from approximately 60 to 300 km above the Earth's surface and is important for radio communication.

Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

What is heavy water and its composition?

A. Denoted by D2O and contains simple hydrogen. B. Denoted by H2O and contains deuterium. C. Denoted by D2O and contains deuterium. D. Denoted by H2O and contains simple hydrogen.

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Explanation

Heavy water (D2O) contains deuterium, an isotope of hydrogen, and is used in certain types of nuclear reactors.

Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

Why is red light used in traffic signals to indicate danger?

A. Due to short wavelength. B. Due to high frequency. C. It has a long wavelength and high frequency. D. It has a long wavelength and short frequency.

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Explanation

Red light has a long wavelength and is less likely to scatter, making it more visible from a distance, hence used for warnings and signals.

Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

A cyclone forms when:

A. Warm air rises over the ocean. B. Moist air rises over the ocean. C. Moist air is pressed downward over the ocean. D. Warm, moist air rises over the ocean.

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Explanation

Cyclones form when warm, moist air rises, creating low pressure that causes winds to spiral inwards.

Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

Earthquakes are measured using which instrument?

A. Wave guide. B. Barometer. C. Seismograph. D. Hydrometer.

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Explanation

A seismograph is an instrument that detects and records the intensity, direction, and duration of earthquakes.

Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

Dementia in a person results in:

A. Weight loss. B. Loss of thinking and writing abilities. C. Loss of thinking, remembering, and reasoning abilities. D. All of these.

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Explanation

Dementia affects cognitive functions, leading to difficulties with memory, reasoning, and performing daily activities.

Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

Fish die outside water primarily due to:

A. Carbon monoxide. B. Oxygen. C. Sunlight. D. Non-absorption of oxygen.

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Explanation

Fish are unable to extract oxygen from the air, as they rely on gills to absorb dissolved oxygen from water.

Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

A pencil appears bent when dipped in water due to:

A. Reflection. B. Diffraction. C. Refraction. D. None of these.

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Explanation

Refraction occurs when light waves change direction as they pass from one medium to another, such as from air to water, causing the pencil to appear bent.

Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

Which compound has the most carbon atoms per mole?

A. Chloroform. B. Methanol. C. Water. D. Ethanol.

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Explanation

Chloroform (CHCl3) has one carbon atom per molecule, which is greater than the number in methanol, water, and ethanol on a per-mole basis.

Eshaal Zahra IQ APTITUDE & ABILITY - General Everyday Science

Which of the following is used to measure astronomical distances?

A. Coulomb. B. Light year. C. Farad. D. Curie.

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Explanation

A light year is a unit of distance used to measure how far light travels in one year, commonly used in astronomy.