Which of the following compounds forms an addition compound with CH3MgBr2 which on hydrolysis produce a secondary alcohol ?
HCHO
CH3CHO
CH3OCH3
CH3COCH3
Which of the following compounds on treatment first with NaNO2/ HCl and then coupled with phenol produces p-hydroxyazobenzene ?
Nitrobenzene
Aniline
Azobenzene
Phenol
Initial setting of cement is mainly due to :
hydration and gel formation
dehydration and gel formation
hydration and hydrolysis
dehydration and dehydrolysis
Consider the following compounds :
1. Sulphur dioxide
2. Hydrogen peroxide
3. Ozone
Among these compounds identify those that can act as bleaching agent :
1 and 3
2 and 3
1 and 2
1, 2 and 3
Which one of the following statement is wrong?
The IUPAC name of [Co(NH3)6Cl3] is hexamine cobalt (III) chloride
Dibenzol peroxide is a catalyst in the polymerization of PVC
Borosilicate glass is heat resistant
Concentrated HNO3 can be safely transported in aluminium containers
B.
Dibenzol peroxide is a catalyst in the polymerization of PVC
Among all the given statements, statement b is the incorrect one. It can be corrected as-
Iron(III) chloride is a catalyst in the polymerization of PVC.
Which set is the correct pairing set (or contains complementary pairs) responsible for the structure of DNA ? (A-adenine, G-guanine, C-cytosine, T-thymine, U-uracil)
A-T, G-C
A-C, G-T
A-G, C-T
A-U, G-C
Barbituric acid and its derivatives are well known as:
tranquilizers
antiseptics
analgesics
antipyretics