Which of the following is not a constituent of petroleum?
Petrol
Coke
Paraffin wax
Lubricating oil
The greenhouse effect which is causing an increase in the atmospheric temperature is mainly due to
nitrogen
sulphur
carbon dioxide
oxygen
The gas which forms carboxy-hemoglobin in the blood, causing suffocation is
carbon monoxide
nitrogen
carbon dioxide
chlorofluorocarbon
The gases present in atmosphere that cause greenhouse effect are
methane, water vapour, carbon dioxide
carbon dioxide, oxygen, nitrogen
carbon dioxide, sulphur dioxide, methane
nitrous oxide, oxygen, water vapour
Maximum quantity of carbon is present in
petrol
kerosene
lubricant oil
ligroin
C.
lubricant oil
The steps required for the conversion of kitchen garbage into manure are given
below in a jumbled form.
A. Put the garbage in the pit.
B. Cover the bottom of the pit with sand.
C. Cover the pit loosely with grass or a gunny bag.
D. Add worms.
The correct sequence of these steps is
B, A, C, D
B, C, A, D
B, A, D, C
B, D, A, C