Which of the following compounds forms an addition compound with CH3MgBr2 which on hydrolysis produce a secondary alcohol ?
HCHO
CH3CHO
CH3OCH3
CH3COCH3
B.
CH3CHO
Among the given compounds, CH3CHO forms an addition compound with CH3MgBr2 in order to produce a secondary alcohol.
Which of the following compounds on treatment first with NaNO2/ HCl and then coupled with phenol produces p-hydroxyazobenzene ?
Nitrobenzene
Aniline
Azobenzene
Phenol
Barbituric acid and its derivatives are well known as:
tranquilizers
antiseptics
analgesics
antipyretics
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
Initial setting of cement is mainly due to :
hydration and gel formation
dehydration and gel formation
hydration and hydrolysis
dehydration and dehydrolysis
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