Basic Elements of Science MCQs for LDC
Practice 20 free Basic Elements of Science questions under Basic Science — Science & Tech.
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LDC — Basic Science — Basic Elements of Science
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
Match List-I with List-II and select the correct answer using the codes given below: List-I (Branch of Science) A. Botany B. Zoology C. Physics D. Chemistry List-II (Subject of Study) 1. Study of Animals 2. Study of Matter and Energy interactions 3. Study of Plants 4. Study of composition and properties of matter
Question 2 of 20
What happens to the weight of an iron object when it rusts?
Question 3 of 20
Which chemical is used to remove ink or rust spots from clothes?
Question 4 of 20
Which lever is used to increase speed rather than force?
Question 5 of 20
Why does Kerosene float on water despite being optically denser than water?
Question 6 of 20
Calculate the number of neutrons in an atom with Mass Number 40 and Atomic Number 20.
Question 7 of 20
The principle of operation of a traditional electrical 'Fuse' is based on:
Question 8 of 20
Why is the Mechanical Advantage of a Class II lever always greater than 1?
Question 9 of 20
What is the symbol for the element Bromine?
Question 10 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 11 of 20
Which atomic model is compared to a 'Watermelon' or 'Christmas Pudding', where electrons are embedded like seeds or dry fruits?
Question 12 of 20
When a bus starts suddenly, passengers feel a jerk backwards. This is due to:
Question 13 of 20
The mass of an electron is approximately what fraction of the mass of a hydrogen atom (proton)?
Question 14 of 20
Which pair represents 'Heavy Hydrogen' and its oxide?
Question 15 of 20
Consider the following statements regarding Nokh Solar Park: 1. It is developed by NTPC. 2. It uses Bifacial PV Modules technology. 3. It is located in the Bikaner district. Which of the above statements is/are correct?
Question 16 of 20
Which of the following is the correct formula for Newton's Second Law of Motion?
Question 17 of 20
The symbol 'Z' is used to represent which fundamental property of an atom?
Question 18 of 20
In which year did Eric Cornell and Carl Wieman receive the Nobel Prize for creating BEC?
Question 19 of 20
Which metal typically has a sound speed of approximately 6,420 m/s?
Question 20 of 20