Question
? = 340.24 + 1001.97 –
6.992Â Â What approximate value should come in place of question mark (?) in the following question? (You are not expected to calculate the exact value)Solution
? = 340.24 + 1001.97 – 6.992  => ? = 340 + 1002 – 72 => ? = 1342 – 49 => ? = 1293Â
The most reactive among the halogens is-
The element used in the manufacture of safety matches is —
The nucleus of an atom consists of-
The gas used for filling weather balloons is-
The fuel that is used in modern submarines is -
Which one amongst the following is not a Green House gas?
Petroleum is a mixture of-
Which of the following is a physical change?
Urea is a —
___________ is the process in which acids and bases react to form salts and water.