Question
Which substance changes the rate of chemical reactions
and remains chemically different during reaction?Solution
"Trigger" loosely, it could be seen as a factor that initiates or changes the rate of a reaction. Typically, in chemistry, such a role is played by a catalyst, but a catalyst does not undergo permanent chemical change itself.
A 10 μF capacitor is charged to 50 V and then connected across an uncharged 20 μF capacitor. What is the final potential difference across both capac...
Which instrument is used to measure electric current? Â
A dielectric placed between the plates of a capacitor increases its:
The distance- time graph for a body moving at uniform speed is?
In which type of motion does the velocity of a body vary with time?
Which of the following is an example of a non-renewable source of energy? Â
For a non-relativistic particle, the ratio of phase velocity to group velocity of de Broglie waves is:
What is the effect of a magnetic field on a current carrying conductor? Â
A stone of mass 0.08 kg is thrown vertically upwards. Give the direction and magnitude of the net force on the stone during its downward motion. Ignore ...
What is the main principle behind the working of an electric motor? Â
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