Related Questions

Main product in calcium carbide-water reaction is
A Ca(OH)2
B C2H2
C CO2
D CaCO3
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
Coke used for the production of calcium carbide should have
A Low ash content
B Low ignition temperature
C High electrical resistivity
D All of the above
আদ্র বাতাসের সংস্পর্শে ক্যালশিয়াম কার্বাইড নিম্নের কোন যৌগটি উৎপন্ন করে? (Which of the following compound is produced when calcium carbide gets contact with moist air?)
A Ethene
B Ethane
C Ethyne
D Ethanal
আর্দ্র বাতাসের সংস্পর্শে ক্যালশিয়াম কার্বাইড নিম্নের কোন যৌগটি উৎপন্ন করে? (Which of the following compound is produced when calcium carbide gets contact with moist air?)
A Ethene
B Ethane
C Ethyne
D Ethanal
The temperature in the calcium carbide furnace is __________ °C.
A 200-300
B 700-850
C 2000-2200
D 4000-4500
Commercial production of calcium carbide requires limestone and __________ as raw materials.
A Coke
B Sand
C Soda ash
D Fuel oil
Reaction of calcium fluorapatite with sulphuric acid produces
A Ortho-phosphoric acid
B Simple superphosphate
C Triple superphosphate
D Red phosphorous
Addition of calcium oxide to water produces
A Exothermic heat
B Hissing sound
C Slaked lime
D All of the above
The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be
A 2M
B $$\frac{{\text{M}}}{2}$$
C M
D $$\frac{{\text{M}}}{4}$$

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