Subject :NSO Class : Class 3
Subject :NSO Class : Class 3
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Subject :NSO Class : Class 3
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 7
__(i)__ is used in making baking powder and __(ii)__ is used as a food preservative. Identify (i) and (ii).
| (i) | (ii) | |
|---|---|---|
| A | Benzoic acid | Tartaric acid |
| B | Tartaric acid | Benzoic acid |
| C | Sulphuric acid | Quick lime |
| D | Hydrochloric acid | Sodium hydroxide |
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Subject :NSO Class : Class 10
Match column I with column II and select the correct option from the given codes.
| Column I | Column II | ||
|---|---|---|---|
| P. | 2-Methylpropane | (i) | CH3COOCH2CH3 |
| Q. | Ethyl ethanoate | (ii) | (CH3)3COH |
| R. | Pentan-3-one | (iii) | CH3CH(CH3)2 |
| S. | 2-Methylpropan-2-ol | (iv) | (CH3CH2)2CO |
| P | Q | R | S | |
|---|---|---|---|---|
| A | (i) | (ii) | (iii) | (iv) |
| B | (iii) | (i) | (ii) | (iv) |
| C | (iii) | (i) | (iv) | (ii) |
| D | (i) | (iii) | (iv) | (ii) |
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Subject :NSO Class : Class 10
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
Ravi and Rohan were cycling together on a street where they accidently collided with each other and fell down. After that, Rohan started feeling pain in his knee and could not bent it easily. Ravi also developed discomfort in one of his shoulders and had difficulty in moving his arm in a circle. They visited doctor who told them that one of their joints were injured. Identify their injured joints and select the correct option regarding them.
| Ravi | Rohan | |
| A | Injured joint is the type of joint also present between first metacarpal and carpal. | 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 hip bone and thigh bone. | Injured joint allows 180° of movement of one bone of pair. |
| D | None of these |