MCQ
The correct equation of nuclear fusion reaction is:
- A1H1 + 1H1 → H2
- B1H2 + 1H1 → 2He4 + 0n1
- C1H2 + 1H2 → 2He4 + energy
- D2H2 + 3H2 → 5H2
✓
Answer
- 1H2 + 1H2 → 2He4 + energy
Explanation:
In nuclear fusion reactions, the heavy isotopes of Hydrogen take part like deuterium 1H2 and tritium 1H3 as they have extra neutron.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which of the following is false for electric lines of force ?
The dimension ML-1 T-2 can correspond to:
- Moment of a force.
- Surface tension.
- Modulus of elasticity.
- Moefficient of viscosity.
The magnetic flux linked with a coil is given by an equation ∅ (in webers) = 
. The induced e.m.f. in the coil at the fourth second will be
|
(a) 16 units |
(b) 39 units |
(c) 67 units |
(d) 145 units |
In Fig. X represents time and Y represent activity of a radioactive sample. Then the activity of sample, varies with time according to the curve
|
(a) A |
(b) B |
(c) C |
(d) D |
A wire is broken in four equal parts. A packet is formed by keeping the four wires together. The resistance of the packet in comparison to the resistance of the wire will be
|
(a) Equal |
(b) One fourth |
(c) One eight |
(d) |
An electron moving with a speed u along the positive x-axis at y = 0 enters a region of uniform magnetic field 
which exists to the right of y-axis. The electron exits from the region after some time with the speed v at co-ordinate y, then
|
(a) v > u, y < 0 |
(b) v = u, y > 0 |
(c) v > u, y > 0 |
(d) v = u, y < 0 |
Consider the situation shown in figure. The wire AB is slid on the fixed rails with a constant velocity. If the wire AB is replaced by a semicircular wire, the magnitude of the induced current will:
- Increase.
- Remain the same.
- Decrease.
- Increase or decrease depending on whether the semicircle bulges towards the resistance or away from it.
On giving $40 \mu C$ charge to a parallel plate capacitor of $10 \mu F$ capacitance, the value of its total energy in joules will be :
→Assertion : Charge is invariant.
Reason : Charge does not depends on speed of frame of reference.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
How will the force between the two poles change if the two poles are connected by an iron rod keeping the distance between two magnetic poles constant ?