S₁: The earth was initially very hot and without an atmosphere.
S₆: This early atmosphere was not one in which we could have survived.
P: The atmosphere came from the emission of gases from the rocks.
Q: Because it contained no oxygen.
R: In the course of time it cooled and acquired an atmosphere.
S: But it contained a lot of other gases that are poisonous to us.
The proper sequence should be
R P S Q
P S R Q
S P Q R
Q R P S
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy