Questions

Which of the following changes when a body performs uniform circular motion?

Which of the following gases is used to prevent food material from getting oxidised?

Which of the following gases is liberated when Sodium Hydrogen Carbonate is heated?

Goitre is caused by the deficiency of ___________

The smell that we get when LPG cylinder leaks is due to the presence of

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

The general consensus is that the millennial _____________ with taking pictures of everything stems from the tendency to over- share on social media, but it may also be a manifestation _______________ our relationship with an increasingly unstable present. When everything around you _______________ before you can register it, it is tempting to reach into your pocket for your smartphone, click away, and think about it later, even ___________ the subject is as simple as a slice of toast. The selfie may be narcissistic, but it is ___________ a self-portrait that anchors you to a time and place, be it your first holiday abroad or the nightclub you visit every weekend.

also be a manifestation _______________ our relationship

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

The sun hid behind a cloud and it seemed like a light (have been switched) off.

Find the potential energy gained by a body of mass 50 kg, if it is raised by 10m. (use g = 10 m/s2)