A. SO3
B. CO
C. NO
D. H2SO4
Related Mcqs:
- Oxidation of primary alcohol gives________________?
A. ketone
B. Aldehyde
C. Alkene then – COOH
D. Ester - In primary alkyl halides the halogen atom is attached to a carbon which is further attached to how many carbon atoms__________________?
A. two
B. three
C. one
D. four - The distinction test for primary secondary and tertiary alcohol required to react each of them is_________________?
A. Cone. HCI and anhydrous SOCl2
B. Cone. HCI and anhydrous CaCl2
C. Cone. HCI and anhydrous PCl2
D. Cone. HCI and anhydrous ZnCl2 - When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound ?
A. Bromine
B. Chlorine
C. Fluorine
D. Iodine - Which of the following is not a condition for the formation of smog ?
A. sufficient NO
B. sunlight
C. less movement of air
D. winds - In which of the following layer of atmosphere there is more thickness of ozone layer ?
A. troposphere
B. stratosphere
C. mesosphere
D. photosphere - Which of the following is not a heavy industry ?
A. iron
B. fertilizer
C. paper
D. none - Which of the following is not a secondary pollutant_________________?
A. ozone
B. carbonic acid
C. sulphuric acid
D. carbon dioxide - Which of the following gases is the main cause of acid rain ?
A. CO
B. NO2
C. both a & b
D. none of the above - Which of the following factors help to measure quallity of water ?
A. DO
B. BOD
C. COD
D. all of the above
