Related Questions

During combustion of coal on grate, clinker formation is increased by the
A Use of thick fire bed
B Low fusion point of ash (
C Use of preheated primary air
D All of the above
Which of the following accentuates clinker-ing troubles on furnace grate burning coal?
A Low reactivity of carbonised residue containing high proportion of iron & sulphur
B Low forced draft & fuel bed temperature
C Thick firebed and preheated primary air
D All of the above
Cement clinker is reduced to fine size by a
A Roll crusher
B Ball mill
C Tube mill
D Hammer mill
On plain x-ray excessive callus formation is seen in
A Paget’s disease
B Osteogenesis imperfecta
C Renal osteodystrophy
D Osteopetrosis
E Hypervascular type of nonunion of bone
Excessive formation of lead sulphate on the surface of the plates happens because of
A allowing a battery to stand in discharged condition for a long time
B topping up with electrolyte
C persistent undercharging
D low level of electrolyte
E all 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 $$\frac{{\text{M}}}{4}$$
দুটি এক-পরমাণুক আদর্শ গ্যাস পরস্পরের সাথে তাপীয় সাম্যাবস্থায় আছে। A গ্যাস m ভরের অণু দ্বারা গঠিত, এবং B গ্যাস 4m ভরের অণু দ্বারা গঠিত। A গ্যাসের আয়তন ৪ গ্যাসের আয়তনের দ্বিগুণ। এদের চাপের অনুপাত PA / PB কত? (Two monoatomic ideal gases are in thermal equilibrium with each other. Gas A is composed of molecules with mass m while gas B is composed of molecules with mass 4m. The volume of gas A is twice that of gas B. What it the ratio of their pressures PA / PB ?)
A 1/4
B 1/2
C 1
D 2
The prices of the commodities ___ during the fuel crisis but the producers incurred ___ in profits .
A increased / a downfall
B shot up / an expansion
C stabilized / a boon
D fluctuated / a deprivation
Primary Producers fall in two categories e.g.
A Indigotrops and Xylotrops
B Numerotrops
C Xylotrops
D Phototrophs and Chemotrophs
The largest producers of coffee in the world is:
A India
B Brazil
C China
D USA

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