Questions

If a body is whirled in a circle, then the work done on it ___.

An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as 342 ms-1?

Which of the following is a land locked country?

Select the missing numbers from the given alternatives

In the following figure, rectangle represents brand managers, circle represents cartoonist, triangle represents sculptors and square represents fathers. Which set of letters represents fathers who are either brand managers or cartoonists?

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.
Not only did they offer him (1)/ good salary but provided (2)/ him with a beautiful bungalow. (3)/ No Error (4)

ZIKA virus which causes neurological birth disorders is transmitted by

What is the valency of magnesium?