Everyday Science — All MCQs
2717 questions available
Q2541.Which disease is caused by the deficiency of Vitamin D:
Correct Answer: B
Vitamin D deficiency causes rickets in children because vitamin D is needed for calcium absorption and proper bone mineralisation. Scurvy is due to vitamin C deficiency and night blindness is commonly linked with vitamin A deficiency.
Q2542.Yeast is essential in making of bread because it produces
Correct Answer: A
Yeast is used in bread-making because it ferments sugars and produces carbon dioxide gas. The CO2 bubbles make the dough rise and create a soft, porous texture after baking.
Q2543.Max Planck won the 1918 Nobel Prize in Physics for the discovery of ______.
Correct Answer: B
Energy Quantum is the correct answer because it matches the fact or concept tested by this question.
Q2544.What is the speed of sound in air
Correct Answer: B
1235km/h is the correct answer because it matches the fact or concept tested by this question.
Q2545.Guava is a rich source of:
Correct Answer: A
Guava is rich in vitamin C, often containing more vitamin C per serving than many citrus fruits. Vitamin C supports immunity, collagen formation and antioxidant protection.
Q2546.First Noble Prize in physics was awarded to?
Correct Answer: B
Roentgen is the correct answer because it matches the fact or concept tested by this question.
Q2547.During the process of photosynthesis, plants releases the
Correct Answer: B
Oxygen is the correct answer because it matches the fact or concept tested by this question.
Q2548.Another name for Vitamin C is:
Correct Answer: A
Ascorbic Acid is the correct answer because it matches the fact or concept tested by this question.
Q2549.Vitamin A is essential for
Correct Answer: B
Preventing night blindness is the correct answer because it matches the fact or concept tested by this question.
Q2550.Which vitamin prevents heamorrhaging?
Correct Answer: D
K is the correct answer because it matches the fact or concept tested by this question.
Q2551.Which vitamin is provided by sunlight to the human body?
Correct Answer: A
Vitamin D is the correct answer because it matches the fact or concept tested by this question.
Q2552.Hydrometer is used to measure:
Correct Answer: B
Specific gravety of a liquid is the correct answer because it matches the fact or concept tested by this question.
Q2553.Velocity of sound in air per second is
Correct Answer: B
331 meters is the correct answer because it matches the fact or concept tested by this question.
Q2554.Acceleration caused by gravity is
Correct Answer: B
32 feet per second² is the correct answer because it matches the fact or concept tested by this question.
Q2555.A rocket needs the speed of -----escape from earth'gravity.
Correct Answer: D
7 miles per secend is the correct answer because it matches the fact or concept tested by this question.
Q2556.The rarest gas in air is:
Correct Answer: A
Neon is the correct answer because it matches the fact or concept tested by this question.
Q2557.The largest planet is
Correct Answer: B
Jupiter is the relevant record-holder among the listed choices for this general-knowledge comparison. Superlative questions test a ranked fact, so the explanation depends on the accepted measurement used in the syllabus, such as area, height, length, depth, population or duration.
Q2558.Acoustics is the science of
Correct Answer: C
Sound is the relevant answer because it is directly tied to the fact, definition or concept named in the stem. For study purposes, focus on the relationship between the stem and the selected term, date, place or person so the item is learned as knowledge rather than memorised as a letter choice.
Q2559.Study of maps and features of the Universe is called
Correct Answer: B
Cosmography is the person or title historically associated with this fact. Such biographical MCQs test a specific contribution, office, work or distinction, so the explanation should connect the person with the achievement or role named in the question.
Q2560.Which of the following is the physics low of moments?
Correct Answer: B
The sum of clockwise moments is equal to the sum of anticlockwise is the relevant answer because it is directly tied to the fact, definition or concept named in the stem. For study purposes, focus on the relationship between the stem and the selected term, date, place or person so the item is learned as knowledge rather than memorised as a letter choice.