- Aisotopes
- Bisomers
- Cisotones
- Disobars
Explanation:
Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
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Specific rotation of sugar solution is 0.01 SI units. 200 of impure sugar solution is taken in a polarimeter tube of length 0.25m and an optical rotation of 0.4rad is observed. The percentage of purity of sugar is the sample is
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(a) 80% |
(b) 89% |
(c) 11% |
(d) 20% |
Which of the following statement is correct
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(a) Both Peltier and Joule effects are reversible |
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(b) Both Peltier and Joule effects are irreversible |
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(c) Joule effect is reversible, whereas Peltier effect is irreversible |
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(d) Joule effect is irreversible, whereas Peltier effect is reversible |
Let and
be the number of holes and conduction electrons respectively in a semiconductor. Then
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(a) |
|
(b) |
|
(c) |
|
(d) |
Which of the following is not a correct statement
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(a) The wavelength of red light is greater than the wavelength of green light |
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(b) The wavelength of blue light is smaller than the wavelength of orange light |
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(c) The frequency of green light is greater than the frequency of blue light |
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(d) The frequency of violet light is greater than the frequency of blue light |