Early atmosphere contained methane and other hydrocarbons. They have been now replaced by

Two containers of volume 5L and 3L.contain air at 3 standard atmospheres and 7 standard atmospheres respectively. The containers are now connected by a short narrow tube. What will be the common pressure in both the containers?

find the underline word is They have been driving since early morning

Select the appropriate option and complete the following paragraph. (single, double, hydrocarbons, C_(2)H_(4), C_(2)H_(6), CHCl_(3), CH_(3)Cl, methane, ethane) Carbon compounds contain carbon and hydrogen as the only two elements are called __________. The smallest hydrocarbon is ________. Another hydrocarbon is ___________with molecular formula __________. In both these hydrocarbons, the valencies of all the atoms are satisfied by the _________ bonds. If one hydrogen atom of methane is replaced by another monovalent element chlorine, then a new carbon compounds is formed. The molecular formula of this compound is ___________.

Select the appropriate option and complete the following paragraph. (single, double, hydrocarbons, C_(2)H_(4), C_(2)H_(6), CHCl_(3), CH_(3)Cl, methane, ethane) Carbon compounds contain carbon and hydrogen as the only two elements are called __________. The smallest hydrocarbon is ________. Another hydrocarbon is ___________with molecular formula __________. In both these hydrocarbons, the valencies of all the atoms are satisfied by the _________ bonds. If one hydrogen atom of methane is replaced by another monovalent element chlorine, then a new carbon compound is formed. The molecular formula of this compound is ___________.

Select the appropriate option and complete the following paragraph. (single, double, hydrocarbons, C_(2)H_(4), C_(2)H_(6), CHCl_(3), CH_(3)Cl, methane, ethane) Carbon compounds contain carbon and hydrogen as the only two elements are called __________. The smallest hydrocarbon is ________. Another hydrocarbon is ___________with molecular formula __________. In both these hydrocarbons, the valencies of all the atoms are satisfied by the _________ bonds. If one hydrogen atom of methane is replaced by another monovalent element chlorine, then a new carbon compounds is formed. The molecular formula of this compound is ___________.

What would have been the colour of the sky, had there been no atmosphere ?

A bottle of whisky contains 42% alcohol. Some part of this bottle is replaced by another bottle of whisky which contains 17% alcohol. Now this mixture contains 27% alcohol. Which part of bottle has been replaced?

A : If the earth did not have an atmosphere, its average surface temperature would have been lower. R : In the absence of atmosphere, the green house effect will be absent.

A : If the earth did not have an atmosphere, its average surface temperature would have been lower. R : In the absence of atmosphere, the green house effect will be absent.