Conversion of graphite to diamond
Decomposition of water
Dehydrogenation of ethane to ethylene
None of these
✅ The correct answer is option D.
Statiometery MCQs
At room temperature, the product [H⁺] [OH⁻] in a solution is 10⁻¹⁴ moles/litre. If, [OH⁻] = 10⁻⁶ moles/litre, then the pH of the solution will be
6
8
10
12
✅ The correct answer is option B.
On mixing 56 gm of CaO with 63 gm of HNO₃, the amount of Ca(NO₃)₂ formed is __________ gm.
82
164
41
8.2
✅ The correct answer is option A.
Which of the following gravity scales is used exclusively for liquids heavier than water?
Baumme scale
Twaddel scale
API scale
None of these
✅ The correct answer is option B.
The unit of dynamic viscosity is
Stoke
Poise
Gm/cm sec
Both B & C
✅ The correct answer is option D.
One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°298 = – 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to
1225
1335
1525
1735
✅ The correct answer is option D.
Atmospheric pressure corresponds to a hydrostatic head of
13.6 cms of Hg
34 ft ofH₂O
1 metre of H₂O
13.6 metres of Hg
✅ The correct answer is option B.
A sugar solution containing __________ percent sugar is equivalent to 1 Brix.
0.01
0.1
1
10
✅ The correct answer is option C.
The osmotic pressure of a solution is directly proportional to the
Lowering of vapor pressure
Molecular concentration of the solute
Absolute temperature of a given concentration
All of the above
✅ The correct answer is option D.
Degrees of freedom will be equal to the number of components for a system comprising of
Only soluble liquid components
Partially miscible two liquid components system having two phases
Two liquid components and one solute (soluble in both the liquids)
None of these
✅ The correct answer is option A.