Multiple-choice quiz covering basic science concepts including transparency, motion types, flower anatomy, phase changes, beekeeping, and vitamin D deficiency.

Here is the solution to the multiple-choice questions with detailed explanations:

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1) The object through which we can see clearly is called ________

✔ Correct Answer: B) Transparent

Explanation:
- Transparent objects allow light to pass through them completely, so we can see clearly through them (e.g., glass, clear water).
- Opaque objects do not allow any light to pass through — you cannot see through them.
- Translucent objects allow some light to pass through but scatter it, so you cannot see clearly through them (e.g., frosted glass).
So, “transparent” is the correct term for objects through which we can see *clearly*.

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2) The motion of a swing is __________

✔ Correct Answer: C) Oscillatory

Explanation:
A swing moves back and forth around a fixed point — this is called oscillatory motion.
- Periodic means it repeats at regular intervals — while a swing’s motion *is* periodic, the more specific and accurate term for its *type* of motion is oscillatory.
- Circular motion would be in a circle (like a Ferris wheel).
- Rectilinear motion is in a straight line.
Oscillatory motion best describes the to-and-fro movement of a swing.

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3) Female reproductive part of a flower ________

✔ Correct Answer: C) Pistil

Explanation:
In flowering plants:
- Pistil (or carpel) is the female reproductive organ — it includes the stigma, style, and ovary.
- Stamen is the male reproductive part (produces pollen).
- Anther is part of the stamen that produces pollen.
- Pollen is the male gamete, not a part of the flower structure itself.
So, the pistil is the correct answer.

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4) The process of changing vapour into a liquid is called ________

✔ Correct Answer: B) Condensation

Explanation:
- Condensation is the phase change from gas/vapour to liquid (e.g., water droplets forming on a cold glass).
- Evaporation is the opposite — liquid to vapour.
- Filtration is separating solids from liquids using a filter.
- Sedimentation is the settling of suspended particles in a liquid.
Thus, condensation is correct.

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5) Honey Bees are reared on a large scale in ________

✔ Correct Answer: B) Apiaries

Explanation:
- Apiaries are places where honey bees are kept and managed for honey production — also known as bee yards.
- Apiculture is the *science or practice* of beekeeping — not a place.
- Sericulture is silk farming (raising silkworms).
- Horticulture is the cultivation of gardens and ornamental plants.
So, the *place* where bees are reared is an apiary.

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6) The deficiency of vitamin D leads to ________

✔ Correct Answer: A) Rickets

Explanation:
- Rickets is a disease in children caused by deficiency of vitamin D, calcium, or phosphorus — leading to soft, weak bones.
- Goitre is caused by iodine deficiency (affects thyroid gland).
- Beriberi is caused by deficiency of vitamin B1 (thiamine).
- Marasmus is severe malnutrition due to lack of calories/protein (not specifically vitamin D).
Therefore, rickets is the correct answer.

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✔ Final Answers:

1) B) Transparent
2) C) Oscillatory
3) C) Pistil
4) B) Condensation
5) B) Apiaries
6) A) Rickets

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