Practice Basic Science under Science & Tech for Patwari with 20 free MCQs in Hindi and English.
Patwari — Basic Science
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
Which component allows an MCB to trip faster than a fuse?
Question 2 of 20
What is the approximate density required to form a Bose-Einstein Condensate compared to normal air?
Question 3 of 20
Which of the following properties are primarily responsible for Carbon's unparalleled capacity to form virtually infinite chains and millions of organic compounds?
Question 4 of 20
Select the correct combination regarding the nature of changes:
1. Melting of butter
2. Fermentation
3. Rusting
4. Magnetization of iron
Question 5 of 20
Regarding the structural formation of spherical mirrors, how is a concave mirror physically distinguished from a solid glass sphere?
Question 6 of 20
Which of the following optical statements mathematically and practically describes the behavior of a light wave as it transitions from a complete vacuum into different dense physical media like glass or water?
Question 7 of 20
Which gas is typically used inside a fluorescent tube?
Question 8 of 20
The crucial secondary intermolecular force known as a hydrogen bond is fundamentally characterized as which specific type of chemical attraction?
Question 9 of 20
Which of the following observable phenomena is generally NOT considered a definitive diagnostic indicator of a chemical reaction?
Question 10 of 20
Which alloy is used to make pressure cookers?
Question 11 of 20
If an object is placed in front of a concave lens, what are the invariable characteristics of the resulting image?
Question 12 of 20
What structural property accounts for the malleability of metals?
Question 13 of 20
The phenomenon of 'Multiple Reflection' is utilized in devices like the kaleidoscope to create numerous distinct images. What determines the formation of these multiple reflections?
Question 14 of 20
The efficient and safe manufacturing of chemical fertilizers, synthetic fibers, and medicinal compounds on a massive industrial scale is specifically studied and optimized under which domain?
Question 15 of 20
Which chemical is used to remove ink or rust spots from clothes?
Question 16 of 20
The scientific study of optics encompasses several core processes related to light. Which of the following is NOT typically a primary focus of this branch?
Question 17 of 20
Which method is commonly used to separate different gases (like Oxygen, Nitrogen, Argon) from air?
Question 18 of 20
Spherical mirrors, heavily utilized in various optical applications, are geometrically derived from which of the following structures?
Question 19 of 20
Metallurgy is the complex science and technology concerned with extracting metals safely from their raw ores and subsequently modifying them for use. Scientifically, this entire domain is deeply rooted within the principles of:
Question 20 of 20
Assertion (A): The Earth wire used in household electrical systems is typically colored Green or Yellow.
Reason (R): The primary function of the Earth wire is to carry the main high-voltage current to the appliance during normal operation.
