DP HEAD CONSTABLE AWO/TPO (GENERAL SCIENCE) QUIZ

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Question 1:

Which among the following always decreases in a Food chain across tropic levels?

Question 2:

Which of the following is widely used in making semiconductor chips?

Question 3:

What is the escape velocity from Earth ?

Question 4:

The type of glass used in making lenses and prisms is?

Question 5:

One Hertz(Hz) is equal to how many Decibles (dB)?