Which one of the following is true for all chemical reactions?
AThere is a change in volume
BHeat is evolved
CChemical bonds are broken or formed
DThere is a change in mass
I DID NOT UNDERSTAND THIS
What can be the reason that a taxi driver has to be more careful when driving on a rainy day than driving on a hot summer day?
AGravitational force between taxi and road is higher on a hot summer day.
BFrictional force between taxi and road is lower on a rainy day.
CGravitational force between taxi and road is lower on a rainy day.
DFrictional force between taxi and road is lower on a hot summer day.
ouestions option please
In each of the following questions, there is a series. One term of the series is wrong. Find out the wrong term from four alternatives given below the series.
4, 10, 22, 31, 40, 49