Which of the elements show passivity when treated with conc. HNO3?
A. Fe
B. A
C. Cr
D. All of the above
Submitted by :- Jamil Ahmed
Photographic plates are coated with a thin film of _________________?
A. AgNO3
B. AgI
C. AgCl
D. AgBr
Submitted by :- Jamil Ahmed
Which of the following is not use of compounds of Fluorine________________?
A. SbF3 is used for manufacture of pottery
B. Sodium fluoroacetate is a rat poison
C. Cu F2 is used in ceramic industry
D. None of the above
Submitted by :- Jamil Ahmed
Bleaching powder is not used for bleaching________________?
A. Cotton
B. Costly fabrics
C. Linen
D. Paper pulp
Submitted by :- Jamil Ahmed
The chemical formula of sodium hypochlorite is________________?
A. NaCLO
B. NaClO2
C. NaClO3
D. NaClO4
Submitted by :- Jamil Ahmed
Which of the halogen can displace other three elements ?
A. Fluorine
B. Chlorine
C. Iodine
D. Bromine
Submitted by :- Jamil Ahmed
Consider the following reaction- 3Cl2 + 6NaOH NaClO3 + 5NaCl + 3H2O This reaction is_______________?
A. Displacement reaction
B. Double displacement reaction
C. Disproportionation reaction
D. Reduction reaction
Submitted by :- Jamil Ahmed
Consider the following reaction- 2KCIO3 + H2C2O4 + H2SO4 K2SO4 + 2H2O + 2CO2 + Oxide Which oxide of chlorine is produced in the above reaction ?
A. Cl2O
B. ClO2
C. Cl2O6
D. Cl2O7
Submitted by :- Jamil Ahmed
Bromine can be liberated from KBr solution by the action of _______________?
The halogen having highest electron affinity is_____________________?
A. Fluorine
B. Chlorine
C. Bromine
D. Iodine
Submitted by :- Jamil Ahmed