Advertisements
Advertisements
The least distance of distinct vision for a normal eye is ____________.
Concept: undefined >> undefined
A student sitting on the last bench can read the letters written on the blackboard but is not able to read/the letters written in his textbook. Which of the following statements is correct?
Concept: undefined >> undefined
Advertisements
Conventionally, the direction of the current is taken as:
Concept: undefined >> undefined
Coulomb is the SI unit of ____________.
Concept: undefined >> undefined
When an electric current is passed, electrons move from:
Concept: undefined >> undefined
A soft iron bar is introduced inside the current-carrying solenoid. The magnetic field inside the solenoid ____________.
Concept: undefined >> undefined
If the key in the given arrangement is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are ____________.
Concept: undefined >> undefined
What is that instrument which can detect the presence of electric current in a circuit?
Concept: undefined >> undefined
A cable manufacturing unit tested few elements on the basisof their physical properties.
| Properties | W | X | Y | Z |
| Malleable | Yes | No | No | Yes |
| Ductile | Yes | No | No | Yes |
| Electrical conductivity | Yes | Yes | Yes | No |
| Melting Point | High | Low | Low | High |
Which of the above elements were dicarded for usage by the company?
Concept: undefined >> undefined
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
- Good thermal conductivity
- Good electrical conductivity
- Ductility
- High melting point
Concept: undefined >> undefined
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
Concept: undefined >> undefined
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
Concept: undefined >> undefined
An alkali metal A gives a compound B (molecular mass = 40) on reacting with water. The compound B gives a soluble compound C on treatment with aluminium oxide. Identify A, B and C and give the reaction involved.
Concept: undefined >> undefined
What constitutes the central and peripheral nervous systems? How are the components of central nervous system protected?
Concept: undefined >> undefined
“Nervous and hormonal systems together perform the function of control and coordination in human beings.” Justify the statement.
Concept: undefined >> undefined
The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
Concept: undefined >> undefined
When light rays enter the eye, most of the refraction occurs at the
Concept: undefined >> undefined
How are we able to see nearby and also the distant objects clearly?
Concept: undefined >> undefined
A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly
Concept: undefined >> undefined
Which of the following represents voltage?
Concept: undefined >> undefined
