Related Questions

K produces 100 parts twice as fast as G does. G produces 100 parts in 40 minutes. If each produces parts at a constant rate, how many parts will K produces in 6 minutes.
A 30
B 25
C 20
D 15
The lime which contains mainly calcium oxide and slacks with water, is
A Fat lime
B Quick lime
C Hydraulic lime
D Poor lime
The product obtained on mixing calcium oxide with water is called
A Quicklime
B Slaked lime
C Milk of lime
D None of these
Reaction of calcium carbide with water produces a gas, which is used
A As an illuminant
B For metal cutting/welding
C Both A & B
D Neither A nor B
নিম্নের কোন oxide টিকে উভধর্মী oxide বলে?
A CaO
B MgO
C ZnO
D CuO
Which metal oxide is an amphoteric oxide?
A iron
B aluminium
C sodium
D potassium
Reaction of calcium fluorapatite with sulphuric acid produces
A Ortho-phosphoric acid
B Simple superphosphate
C Triple superphosphate
D Red phosphorous
Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart greenish blue color to the glass.
A Chromium
B Arsenic
C Copper
D Mangnese
A computer takes 50 nanoseconds to do an 221 addition. How many addition can it do in 1 second?
A 20 million
B 25 million
C 30 million
D 35 million
Fill in the gaps : As water passes -----various rocks, calcium fluoride gets in the water.
A of
B with
C on
D none of these

Next steps