Subject :NSO Class : Class 3
Subject :NSO Class : Class 5
Three glasses P, Q, R having equal amounts of water were taken and equal amount of salt was added to each one of them.
After that, P was cooled, Q was heated and R was left undisturbed.
The liquid in which glass will now taste most salty ?
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Subject :NSO Class : Class 3
Ans 5:
Class : Class 3
Both North and South have the sunlight from morning to afternoon so maximum time of sunlight. East has only morning and west has only afternoon so they have lesser time
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Subject :NSO Class : Class 7
Ans 4:
Class : Class 8
The correct answer is B. In 4sec the objet increases its speed to 200m/s . Acceleration=(200-0)÷4 = 50m/s^2. S=ut 1/2×at^2. Solve it you'll get 400m. a=acceleration(50), t=time(4), u=initial velocity(0) and s is displacement(consider it distance travelled)
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
Ans 1:
Class : Class 8
Coal is a fuel with high carbon content derived from destructive distillation of coal.
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Subject :NSO Class : Class 8
Ans 1:
Class : Class 8
The correct option is D.
Because if you see the reactivity table copper is placed below hydrogen.So it is not more reactive than hydrogen and cannot replace it from its compound.
Ans 2:
Class : Class 6
correct answer is D because in the reactivity series,copper lies below hydrogen which means that hydrogen cannot be displaced by copper from its salt solution.
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 7