While assigning R, S configuration, the correct order of priority of groups attached to chiral carbon atom is
CONH2 > COCH3 > CH2OH > CHO
CONH2 > COCH3 > CHO > CH2OH
COCH3 > CH2OH > CHO > CH2OH
CHO > CH2OH > COCH3 > CONH2
How many Faradays of electricity are required to deposit 10g of calcium from molten calcium chloride using inert electrodes? ( Molar mass of calcium = 40g mol-1)
0.5 F
1F
0.25 F
2 F
What is the general molecular formula of the product obtained on heating lanthaniods (Ln) with sulphur?
LnS
LnS3
Ln3S2
Ln2S3
In the cell represented by
Pb(s)|Pb2+(1M) || Ag+(1M)| Ag(s), the reducing agents is
Pb2+
Pb
Ag
Ag+
Which metal is refined by Mond's process?
Titanium
Copper
Nickel
Zinc
C.
Nickel
The Mond's process is used for the purification of Ni. It is the most important process for getting 99.9% pure Ni metal from crude Ni. In this process, the crude Ni is heated in the stream of CO to form volatile nickel carbonyl, Ni(CO)4. This Ni(CO)4 when heated higher, it will decomposed to give pure mental as.
How is sodium chromate converted into sodium dichromate in the manufacture of potassium dichromate from chromite ore?
By the action of concentrated sulphuric acid
By roasting with soda ash
By the action of sodium hydroxide
By the action of limestone