Subject :NSO Class : Class 4
Subject :NSO Class : Class 3
Post Your Answer
Subject :NSO Class : Class 7
Ans 3:
Class : Class 8
I completely agree... The HCl reacts with metals , which is major reason of why HCl is stored in glass bottles..
Ans 7:
Class : Class 8
Inorganic acids such as minerals acid like HCL , H2SO4 etc . Are. Not always made in factories . HCL is produced in our stomach.
Ans 10:
Class : Class 7
Yes, I also agree. HCl is a strong acid and reacts with metals almost exactly like H2S04, it is also stored in glass for this reason, question is wrong.
Ans 11:
Class : Class 8
Hydrochloric acid reacts with metals and corrodes them and is therefore stored in glass bottles... This question is wrong and so is the explanation.
Ans 14:
Class : Class 9
Hydrocloric acid is very corrosive and reacts with metals . So HCL is stored in glass bottles because it dont causes damage to it . ..........SO 3 statement should be true and their explanation is wrong .
Post Your Answer
Subject :NSO Class : Class 7
Post Your Answer
Subject :NSO Class : Class 5
Ans 11:
Class : Class 7
Stapler ( option D ) is the odd one out as it is a third class lever i.e. effort is between the load and fulcrum .
Post Your Answer
Subject :NSO Class : Class 4
Post Your Answer
Subject :NSO Class : Class 8
Ans 3:
Class : Class 9
The correct answer is B because manure is soluble in water but it is absorbed very slowly
Ans 4:
Class : Class 10
it is A as fertilizers are soluble in water. You might have heard that fertilizers flow into the river and cause eutrophication it flows into river because it is soluble in water
Post Your Answer
Subject :NSO Class : Class 8
A 12 m long uniform bridge weighing 100000 N is being supported at the two ends. A lorry weighing
30000 N is parked at the 4 m mark as shown in the
figure. What are the forces acting on the bridge by
support A and support B respectively?
| Support A | Support B | |
| A | 70000 N | 60000 N |
| B | 60000 N | 70000 N |
| C | 65000 N | 65000 N |
| D | 90000 N | 40000 N |
how ?
Post Your Answer
Subject :NSO Class : Class 3
Post Your Answer
Subject :NSO Class : Class 6
Ans 2:
Class : Class 10
smsmsmsmsmmmsmsmsmsmsmsmsmsmsmfjjjjjjjjjjfjjfjfjfjfjfffffffffffffffyhhhhhhhhhhhhhhhhhhhhhhhhhhhhyhhhhhhhhhhyyyyyyyyyyyyyyyyujjjjjjjjjjjjjjjjikkkkkkkkkkkkkkkkkkkkkkkloooooooooooooooyhhhhhhhhhhhhhhhhbggggggggggggggghndcccccccccccccccccccchndcccccccccccccccccccccccccccedhyncccccccccccccccccccccccccccccccccccccccccccccccccccccchynedcccccccccccccccccccccccccchdenyccccccccccccedyhncccccccccccccccccccccccyyyyyyyyyyyyyyyyyyyyyyyyyyyyyydheycnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
Ans 5:
Class : Class 8
Here, in this example, the pendulum passes through y 21 times. So, it will do 10 complete oscillations and 1 half which is basically touching y. Therefore, the time period of the pendulum is T/10.
Ans 7:
Class : Class 7
hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeelllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllloooooooooooooooooooooooooooooooooooooooooooooo
Ans 8:
Class : Class 8
it should be t/10 only as during time period the pendulum will pass through the point y twice.so the time period will be t/10
Ans 10:
Class : Class 9
Yes it should be t/10 as the pendulum will pass through point y twice in its one revolution...... so the the time period should be t/10
Ans 12:
Class : Class 6
throughout the time period or the 21 swings the pendulum will pass through the point Y 21 times. so the answer is B(t/21)
Ans 15:
Class : Class 6
It should be T/21 only as T is the total time and no of times it passes Y is 21.Therefore the answer is T/21
Ans 16:
Class : Class 8
it should be t/10 only as during time period the pendulum will pass through the point y twice.so the time period will be t/10
Ans 17:
Class : Class 8
it should be t/10 only as during time period the pendulum will pass through the point y twice.so the time period will be t/10