Options:
- A. R-F
- B. R-C
- C. R-Br
- D. R-I
View Answer
D. R-I
Chemistry
Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate ?
Options:
- A. Primary alcohol
- B. Secondary alcohol
- C. Tertiary alcohol
- D. All of above
View Answer
C. Tertiary alcohol
In network of silica (SiO2) each silicon atom is surrounded by _____________ atoms of osygen?
Options:
- A. 4
- B. 2
- C. 1
- D. 6
View Answer
A. 4
The process of aluminium extraction is called__________________?
Options:
- A. Hall process
- B. Thermite process
- C. Haber process
- D. Contact process
View Answer
A. Hall process
Phosphoric acid is a weak acid and its basicity is____________________?
Options:
- A. 1
- B. 3
- C. zero
- D. 2
View Answer
B. 3
Which of the elements show passivity when treated with conc. HNO3?
Options:
- A. Fe
- B. A
- C. Cr
- D. All of the above
View Answer
D. All of the above
Bleaching powder is not used for bleaching________________?
Options:
- A. Cotton
- B. Costly fabrics
- C. Linen
- D. Paper pulb
View Answer
B. Costly fabrics
Which of the following is the weakest reducing agent ?
Options:
- A. HF
- B. HBr
- C. HC
- D. HI
View Answer
A. HF
Which is used for artificial ripening of fruit ?
Options:
- A. ethane
- B. ethene
- C. ethyne
- D. methane
View Answer
B. ethene
Which C-X bond has the highest bond energy per mole ?
Options:
- A. C-F
- B. C-C
- C. C-Br
- D. C-I
View Answer
A. C-F