Which is the paramagnetic oxide of chlorine ?
A. Cl2O7 B. Cl2O6 C. ClO2 D. all
Chemistry MCQs
The colour of chlorine gas is_______________?
A. pale yellow B. freenish yellow C. reddish brown D. grayish black
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
Which one of the following is the weakest acid in water__________________?
A. HF B. HCI C. HBr D. HI
Which of the following represents the correct electronic configuration of VII A group elements in the ground state ?
A. ns2p2 B. ns2p4 C. ns2p5 D. ns2p6
Which is the strongest acid ?
A. HCIO B. HCIO2 C. HCIO3 D. HCIO4
Bleaching powder is an example of________________?
A. Normal salt B. Double salt C. Mixed salt D. Complex
Which of the following oxides of iodine is used for quantitative analysis of CO ?
A. I2O4 B. I4O2 C. I2O5 D. All are equally useful
Which of the halogen has highest electronegativity ?
A. Fluorine B. Chlorine C. Bromine D. Iodine
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