One kg of carbon requires 4/3 kg of oxygen and produces __________ kg of carbon monoxide gas.
8/3
11/3
11/7
7/3
Correct Answer :
D. 7/3
Related Questions
In a reversible adiabatic process, the ratio of T1/T2 is equal to
(p2/p1)γ - 1/ γ
(p1/p2)γ - 1/ γ
(v2/v1)γ - 1/ γ
(v1/v2)γ - 1/ γ
The extremeties of any diameter on Mohr's circle represent
Principal stresses
Normal stresses on planes at 45°
Shear stresses on planes at 45°
Normal and shear stresses on a plane
Which of the following process can be made reversible with the help of a regenerator?
Constant pressure process
Constant volume process
Constant pvn process
All of these
A cantilever beam is one which is
Fixed at both ends
Fixed at one end and free at the other end
Supported at its ends
Supported on more than two supports
When the gas is heated at constant pressure, the heat supplied
Increases the internal energy of the gas
Increases the temperature of the gas
Does some external work during expansion
Both (B) and (C)
When a bar is cooled to - 5°C, it will develop
No stress
Shear stress
Tensile stress
Compressive stress
Percentage reduction in area performing tensile test on cast iron may be of the order of
50 %
25 %
20 %
30 %
The molecular mass expressed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of
0.224 litres
2.24 litres
22.4 litres
224 litres
The buckling load for a given column depends upon
Area of cross-section of the column
Length and least radius of gyration of the column
Modulus of elasticity for the material of the column
All of the above
For riveting, the size of hole drilled in plates is __________ shank diameter of rivet.
Equal to
Less than
Greater than
None of these
The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of
One right angled triangle
Two right angled triangles
One equilateral triangle
Two equilateral triangles
The efficiency of Diesel cycle approaches to Otto cycle efficiency when
Cut-off is increased
Cut-off is decreased
Cut-off is zero
Cut-off is constant
For a beam, as shown in the below figure, when the load W is applied in the centre of the beam, the maximum deflection is
Wl3 / 48EI
5Wl3 / 384EI
Wl3 / 392EI
Wl3 / 384EI
Euler's formula holds good only for
Short columns
Long columns
Both short and long columns
Weak columns
The strain energy stored in a body due to suddenly applied load compared to when it is applied gradually is
Same
Twice
Four times
Eight times
The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as
Element
Compound
Atom
Molecule
The atomic mass of nitrogen is __________ oxygen.
Equal to
Less than
More than
None of these
The state of a substance whose evaporation from its liquid state is complete, is known as
Vapour
Perfect gas
Air
Steam
Diamond riveted joint can be adopted in the case of following type of joint
Butt joint
Lap joint
Double riveted lap joints
All types of joints
A process, in which the temperature of the working substance remains constant during its expansion or compression, is called
Isothermal process
Hyperbolic process
Adiabatic process
Polytropic process
Which of the following has the minimum atomic mass?
Oxygen
Sulphur
Nitrogen
Carbon
The buckling load for a given material depends on
Slenderness ratio and area of cross-section
Poisson's ratio and modulus of elasticity
Slenderness ratio and modulus of elasticity
Slenderness ratio, area of cross-section and modulus of elasticity
The atomic mass of sulphur is
12
14
16
32
Otto cycle is also known as
Constant pressure cycle
Constant volume cycle
Constant temperature cycle
Constant temperature and pressure cycle
Impact strength of a material is an index of its
Toughness
Tensile strength
Capability of being cold worked
Hardness
The absolute zero temperature is taken as
-273°C
73°C
237°C
-237°C
The efficiency of Diesel cycle with decrease in cut-off
Increases
Decreases
First increases and then decreases
First decreases and then increases
If the radius of wire stretched by a load is doubled, then its Youngs modulus will be
Doubled
Halved
Becomes four times
None of the above
The ideal efficiency of a Brayton cycle without regeneration, with increase in pressure ratio will
Increase
Decrease
Remain unchanged
Increase/decrease depending on application
The work ratio of simple gas turbine cycle depends upon
Maximum cycle temperature
Minimum cycle temperature
Pressure ratio
All of these