Atomic _________________ of an element is a whole number ?
Atomic _________________ of an element is a whole number ?
A. Weight
B. Number
C. Volume
D. Radius
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In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be
Question: In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be
[A].higher, as it gives higher wavelength. [B].
lower, as it gives higher wavelength. [C].
higher, as it gives shorter wavelength. [D].
lower, as it gives shorter wavelength. Answer: Option C
Explanation:
No answer description available for this question.
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
Question: Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
[A].malleable iron [B].
grey cast iron [C].
chilled cast iron [D].
white cast iron Answer: Option A
Explanation:
No answer description available for this question.
The best guide to judge the general quality of water is the measurement of its
Question: The best guide to judge the general quality of water is the measurement of its
[A].pH value. [B].
electrical conductivity. [C].
turbidity. [D].
dissolved oxygen content. Answer: Option B
Explanation:
No answer description available for this question.
A dense structure of grinding wheel is not used for the_____________________?
A dense structure of grinding wheel is not used for the_____________________?A. Ductile material
B. Hard materials
C. Brittle materials
D. Finishing cutsWhich of the following pair is correctly matched?
Question: Which of the following pair is correctly matched?
[A].Heat transfer: Thermal diffusivity. [B].
Mass transfer: Diffusion co-efficient. [C].
Momentum transfer: Kinematic viscosity. [D].
all ‘a’, ‘b’ & ‘c’ are correctly matched. Answer: Option D
Explanation:
No answer description available for this question.
The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 × 10-14 m2S- 1 at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is_________________?
The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 × 10-14 m2S- 1 at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is_________________?A. 130
B. 180
C. 230
D. 250