Subject :NSO Class : Class 6
Subject :NSO Class : Class 10
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Subject :NSO Class : Class 10
Which of the following comparisons of the two birth control methods used by women are correct?
| Contraceptive pills | Tubal ligation | |
| A | No implantation of embryo | Implantation of embryo occurs |
| B | No menstruation | Menstruation occurs |
| C | Reversible | Reversibility is very poor |
| D | Ovulation occurs | No ovulation |
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 8
Ans 3:
Class : Class 8
The volume of the stone is equal to the volume of the water increased in the measuring cylinder.
The volume of the stone is calculated from the formula Volume =Mass/Density.
In this case, the Mass = 12 g and Density = 3g cm^3
Volume = 12/3 = 4 cm^3
The actual volume of liquid in the measuring cylinder is
20cm^3
.
So, the increase in volume will show a new reading of
20cm3+4cm3=24cm^3
hence...answer is (B)
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
Nisha and Neha were playing together on a street where they accidentally collided with each other and fell down. After that, Neha started feeling pain in her elbow and could not bent it easily. Nisha also developed discomfort in one of her wrists and had difficulty in writing. They visited doctor who told them that their joints were injured. Identify their injured joints and select the correct option regarding them.
| Nisha | Neha | |
|---|---|---|
| A | Injured joint is the type of joint also present between metacarpal and carpal of thumb. | Injured joint is the type of joint also present between skull and first vertebra of backbone. |
| B | Injured joint is the type of joint also present between upper arm and forearm. | Injured joint is the most freely movable joint of body. |
| C | Injured joint is the type of joint also present between tarsal bones. | Injured joint allows movement primarily in one plane. |
| D | None of these |