Basic Elements of Science MCQs for Patwari
Practice 20 free Basic Elements of Science questions under Basic Science — Science & Tech.
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Patwari — Basic Science — Basic Elements of Science
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
Identify the incorrect match regarding the class of levers and their examples: List-I (Class) | List-II (Example)
Question 2 of 20
The study of 'Life Science' is further categorized into:
Question 3 of 20
In the case of Hypermetropia, where is the image of a nearby object formed?
Question 4 of 20
Which of the following is NOT a Class III lever?
Question 5 of 20
Match List-I with List-II and select the correct answer using the codes given below: List-I (Separation Method) A. Fractional Distillation B. Centrifugation C. Sublimation D. Crystallization List-II (Application) 1. Separation of cream from milk 2. Separation of petroleum products 3. Purification of Alum 4. Separation of Camphor and Sand
Question 6 of 20
Which of the following values represents the refractive index of water?
Question 7 of 20
Which alloy is specifically used for making ship propellers due to its properties?
Question 8 of 20
Why does a solid maintain its shape when subjected to external force?
Question 9 of 20
In the context of atomic structure, what does 'A' represent in the formula A = p + n?
Question 10 of 20
Which of the following gases is NOT used as a fuel gas?
Question 11 of 20
Consider the following statements regarding the Earth's crust: 1. Oxygen is the most abundant element. 2. Silicon is the second most abundant element. 3. Aluminum is the most abundant metal. Which of the statements given above are correct?
Question 12 of 20
Which scientist proved that the Atomic Number (Z), and not the Atomic Mass, is the fundamental property of an element?
Question 13 of 20
For a Class III lever, the Mechanical Advantage (MA) is always:
Question 14 of 20
Argon-40 (Ar) and Calcium-40 (Ca) have the same mass number but different atomic numbers (18 and 20). This makes them:
Question 15 of 20
Sound travels faster in solids than in gases because:
Question 16 of 20
In a Bifocal lens used for correcting Presbyopia, which part consists of a convex lens?
Question 17 of 20
Consider the following table comparing changes: | Basis | Physical Change | Chemical Change | |---|---|---| | 1. Nature | Temporary | Permanent | | 2. Reversibility | Irreversible | Reversible | | 3. Composition | Same | Changes | Which row contains an incorrect comparison?
Question 18 of 20
Which of the following defines non-metals based on their chemical properties?
Question 19 of 20
Which of the following materials is optically the densest?
Question 20 of 20