HARD
UPSC CDS
IMPORTANT
Earn 100
In which of the following groups of organisms, food material is broken down outside the body and absorbed?
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Important Questions on UPSC CDS (II) Previous Year Paper 2021
HARD
UPSC CDS
IMPORTANT
A sound wave has a frequency of kHz and a wavelength of cm. How long will it take to travel km?
HARD
UPSC CDS
IMPORTANT
An electric bulb is connected to a V generator. The current is A. What is the power of the bulb?
MEDIUM
UPSC CDS
IMPORTANT
Refraction of light, as it enters from one transparent medium to another, is due to
MEDIUM
UPSC CDS
IMPORTANT
A bus starting from a bus stand and moving with uniform acceleration attains a speed of km/h in minutes. What is its acceleration?
MEDIUM
UPSC CDS
IMPORTANT
Which one of the following is the correct reactivity order of metals reacting with dilute HCI?
EASY
UPSC CDS
IMPORTANT
Which one of the following acid is secreted by leaves of nettle that causes painful stings?
EASY
UPSC CDS
IMPORTANT
Which of the following statements is/are correct?
. All the bases are alkali.
. All alkalis dissolve in water.
. Alkalis are soapy to touch, bitter in taste and corrosive in nature.
Select the correct answer using the code given below :
EASY
UPSC CDS
IMPORTANT
Which one of the following materials is present in a guard tube (drying tube) that is used for preparation of HCI gas?
