Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

Which of the following is used to measure astronomical distances?

A light year is a unit of distance used to measure how far light travels in one year, commonly used in astronomy.
Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

The pH of soil is raised using:

Limestone (calcium carbonate) is commonly used to raise the pH of acidic soils, making them more alkaline.
Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

Isotopes of an element have an equal number of:

Isotopes of an element have the same number of protons but different numbers of neutrons, resulting in different atomic masses.
Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

Which vitamin is stored in the smallest amount in the human body?

Vitamin C is water-soluble and not stored in significant amounts in the body, unlike fat-soluble vitamins like A, D, E, and K.
Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

What is a protein molecule composed of?

Proteins are long chains of amino acids, which are the building blocks of life and perform a variety of functions in living organisms.
Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

One degree of longitude at the equator corresponds to a distance of:

At the equator, one degree of longitude is approximately 69 miles, as the Earth's circumference is greatest at the equator.
Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

If the radius of a circle triples, how does its area change?

The area of a circle increases by the square of the factor by which the radius increases. If the radius triples, the area increases by nine times.
Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

What is the chemical formula for alum?

Alum is a chemical compound with the formula KAl(SO4)2?12 H2O, commonly used in water purification and dyeing.
Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

What is the total number of combinations possible for choosing 3 items out of 9?

The number of combinations of 9 items taken 3 at a time is calculated using the combination formula C(9,3), which equals 84.
Eshaal Zahra IQ APTITUDE & ABILITY   -   General Everyday Science

When do day and night become equal in length?

The equinoxes, occurring on 21st March and 23rd September, are when day and night durations are approximately equal.

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