Pollutants have adverse effect over_________________?
Pollutants have adverse effect over_________________?
A. Biosphere
B. Ecosystem
C. Both a & b
D. Hydrosphere
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Iodoform test can be used to distinguish between_________________?
Iodoform test can be used to distinguish between_________________?A. ethanol and methanol
B. acetaldehyde and methanal
C. acetone and diethyl ketone
D. all of the aboveWhich of the following is used as water disinfectant to avoid the formation of toxic compounds_________________?
Which of the following is used as water disinfectant to avoid the formation of toxic compounds_________________?A. Cl2
B. O3
C. ClO2
D. both B & CSolution of Na2SO4 will be_________________?
Solution of Na2SO4 will be_________________?A. basic
B. acidic
C. neutral
D. cannot be presicted without dataThe type of filtering media used for filtration depending upon____________________?
The type of filtering media used for filtration depending upon____________________?A. Nature of reactants
B. Nature of crucible
C. Nature of product
D. Nature of precipitateBoron is non-netal whereas A1 is metal. It is due to_______________________?
Boron is non-netal whereas A1 is metal. It is due to_______________________?A. Small size
B. High nuclear charge
C. Both A and B
D. No authorized justification yetWhich of the following statements is incorrect about halogens ?
Which of the following statements is incorrect about halogens ?A. All are non-metals
B. All the halogens have electronic conviguration ns2p5
C. They have high electron attinity and ionization energy
D. All the halogens react with noble gases to form their halides