Subject :NSO Class : Class 7
Class : Class 8
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 .
Class : Class 8
I completely agree... The HCl reacts with metals , which is major reason of why HCl is stored in glass bottles..
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.
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.
Subject :NSO Class : Class 7
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Subject :NSO Class : Class 5
Ans 3:
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 .
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 8
Ans 4:
Class : Class 9
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
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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 ?
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Subject :NSO Class : Class 3
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Subject :NSO Class : Class 6
Ans 1:
Class : Class 8
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 3:
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 4:
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 5:
Class : Class 7
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 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 9:
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 15:
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 16:
Class : Class 8
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Subject :NSO Class : Class 6
Ans 2:
Class : Class 6
We can express process v as deposition and how did condensation and freezing get involved
Ans 7:
Class : Class 7
Guys you are wrong process name is deposition but you need to cool it to water then freeze it
Ans 14:
Class : Class 8
Answer is B because to turn Water vapour into ice you need Deposition but water vapour cannot be deposited that is why you first need to turn the water vapour to water by condensation and then to convert water to ice you need freezing . Hence answer B is correct
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Subject :NSO Class : Class 5
Ans 3:
Class : Class 8
The correct ans is option C because electrostatic force is a non contact force which is similar to magnetic force and the comb is like a magnet and tin pieces of paper are like the metal here (So the comb will attract the tiny pieces of paper).