Which one of the following is the weakest acid in water__________________?
A. HF
B. HCI
C. HBr
D. HI
Chemistry Mcqs
Which of the following statements is incorrect about fluorine_______________?
Which of the following statements is incorrect about fluorine_______________?
A. fluorine is restricted to -1 oxidation state
B. fluorine follows octet rule and as well as extended octet rule
C. fluorine has lowest dissociation energy among the halogens
D. both B and C
The colour of chlorine gas is_______________?
The colour of chlorine gas is_______________?
A. pale yellow
B. freenish yellow
C. reddish brown
D. grayish black
Which is the paramagnetic oxide of chlorine ?
Which is the paramagnetic oxide of chlorine ?
A. Cl2O7
B. Cl2O6
C. ClO2
D. all
Which one of the following halogens is present in Teflon________________?
Which one of the following halogens is present in Teflon________________?
A. I2
B. Br2
C. Cl2
D. F2
Indicate the correct statement__________________?
Indicate the correct statement__________________?
A. Cl2 is the strongest oxidizing agent
B. I2 is a volatile solid
C. Br2 is more reactive than Cl2
D. Cl2 is insoluble in water
Photographic plates are coated with a thin film of _________________?
Photographic plates are coated with a thin film of _________________?
A. AgNO3
B. AgI
C. AgCl
D. AgBr
Which of the following is not use of compounds of Fluorine________________?
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
Bleaching powder is not used for bleaching________________?
Bleaching powder is not used for bleaching________________?
A. Cotton
B. Costly fabrics
C. Linen
D. Paper pulb
The chemical formula of sodium hypochlorite is________________?
The chemical formula of sodium hypochlorite is________________?
A. NaCLO
B. NaClO2
C. NaClO3
D. NaClO4