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TestMaster MCQs

101 Everyday Science MCQ'S Questions

Home Science 101 Everyday Science MCQ'S
Q. Total charge on electron is?

Explanation:

- The elementary charge on a single electron is -1.6

Q. Vitamin ___ cannot be stored in Human Body.
A
D
None of these

Explanation:

vitamin C Citrus fruits, is water soluble vitamin so it cannot be stored in human body . . green leafy vegetables and tomatoes are good source of

Q. The maximum number of electrons K orbit possesses?
6
8
4

Explanation:

, also known as the first electron shell. It can hold a maximum of 8 electrons. It can hold a maximum of The M orbit, also known as the 18 electrons. second electron shell. The K orbit third electron shell. It can hold a maximum of

Q. The earth has ______ types of movements at the same time.
5
4
3

Explanation:

The Earth moves in two primary motions: Rotation (spinning on its axis) and Revolution (orbiting around the Sun). Rotation causes day and night, while revolution leads to seasons.

Q. Atomic number of hydrogen is:
4
2
3

Explanation:

The correct answer to the question is: 4

Q. Which uranium atoms undergo fission readily?
U
U
None of these

Explanation:

Uranium-235 (U

Q. Which is the longest and the strongest bone in human body?
Femur
Stapes
Tibia

Explanation:

smallest bone is the stirrup Stapes The **** . (stapes) The lowest part of the backbone called the The longest bone is the Femur (one of the 3 small bones inside the ear). strongest bone

Q. The Mars has____ moons.
5
4
3

Explanation:

Mercury : 0 Venus : 0 Earth : 1 Mars : 2 Jupiter : 95 Saturn : 146 Uranus : 27

Q. The first stable product of dark reaction is ______ carbon molecule?
6
4
5

Explanation:

The first stable product of the dark reaction (Calvin cycle) is 3-phosphoglycerate (3-PGA), a 3-carbon compound. This occurs after CO? fixation by RuBisCO.

Q. An element has seven electrons in its valence shell, it's valency is _____?
8
None of these

Explanation:

An element with 7 valence electrons needs 1 more electron to complete its octet. Therefore, its valency is 1 , as it tends to gain 1 electron during bonding.

Q. The dimensions of kinetic energy are?
ML?
ML

Explanation:

KE = M

Q. Oxygen has 6 electrons in its valence shell so its valency is ______?
18
None of these
8

Explanation:

Valency is the number of electrons an atom gains, loses, or shares to complete its octet. 2 Oxygen has 6 valence electrons and needs more to complete its octet,

Q. Iodine dissolves in water in the presence of KI due to formation of which of the following species?
I?
I?
I?

Explanation:

This complex ion is the reason why iodine's solubility Iodine (I?) is not very soluble in water on its own due to its non-polar nature. However, when added to an aqueous solution of potassium iodide (KI), The iodide ions (I?) react with the iodine molecules to form a triiodide ion (I??), which is more soluble in water. significantly increases in the presence of KI.

Q. Time period of seconds pendulum is ______ second.
0.1
1
0.5

Explanation:

A seconds pendulum is defined as a pendulum with a time period of 2 seconds

Q. Which of the following contains four significant figures?
0.0010
None of these
0.035

Explanation:

Rule 1 : Non-zero digits are always significant. In the number 1.035 , the digits 1, 3, and 5 are all non-zero and therefore significant. Rule 2 : Zeros between non-zero digits are significant. The four

Q. Night blindness is caused due to the deficiency of vitamin ______?
B
D
C

Explanation:

One of the early signs of vitamin A deficiency is A deficiency of while Osteomalacia Rickets is caused by to to during an injury. Vitamin D deficiency of

Q. The ratio of ????/???? for a diatomic gas is equal to ______?
1.5
1.67
1.6

Explanation:

It is used in thermodynamic processes.

Q. Which of the following is a fat soluble vitamin?
B
C
None of these

Explanation:

They are present in foods that A, D, E, and K are fat-soluble vitamins. liver and fat tissue Fat-soluble vitamins The body stores these vitamins in the are absorbed by the body along with dietary fats. Megadoses when they are not in use. contain fats. of fat-soluble vitamins can be toxic.

Q. A vitamin that affects vision in dim light is ______?
C
None of these
D

Explanation:

Vitamin A is essential for the formation of rhodopsin, a pigment in the retina that helps with vision in dim light . Deficiency of Vitamin A can lead to night blindness.

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