-
mnsoomro
Posts
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…
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 _______________?
A. Iodine solution B. Chlorine C. NaCl D. K Submitted by :- Jamil Ahmed
The halogen having highest electron affinity is_____________________?
A. Fluorine B. Chlorine C. Bromine D. Iodine Submitted by :- Jamil Ahmed