Subject :NSO Class : Class 7
Study the given Venn diagram carefully.
Identify 1, 2 and 3.
| 1 | 2 | 3 | |
| A | Do not React with metals | react with litmus | Do not react with carbonates |
| B | Are sour in taste | React with carbonates | Are soapy to touch |
| C | Have OH– > H+ | Have H+ OH– = H+ | Have OH– H+ > OH– |
| D | React with carbonates to form CO2 gas | can be identified by using indicators | turn china rose indicator green |
Ans 1:
Class : Class 7
Answer is B as neutral solutions cannot be identified
Ans 2:
Class : Class 7
Ans 3:
Class : Class 7
3 and 2 should be interchanged
Ans 4:
Class : Class 6
3 cannot be the answer
Ans 5: (Master Answer)
Class : Class 1
The correct answer is D.
Ans 6:
Class : Class 9
3 and 2 should be interchanged.
Ans 7:
Class : Class 7
3 and 2 shud be interchanged
Ans 8:
Class : Class 6
I mean D
Ans 9:
Class : Class 7
Kindly Explain your answer Admin.
Ans 10:
Class : Class 9
3 and 2 should be interchanged, Sir
Ans 11:
Class : Class 7
Ans 12:
Class : Class 7
Actually venn diagram shows the propertied of the substances, not the substances themselves. So, it should be D. Admin is right.
Ans 13:
Class : Class 8
Venn diagram shows proportion of acid and base to be equal for 3 i.e. salt then how can you say china rose indicator will turn green i.e. salt is basic in nature, i.e. 3rd part of option D which is correct as per admin. Please clarify..
Ans 14:
Class : Class 7
Ans 15:
Class : Class 7
Ans 16:
Class : Class 7