Electroscope is used
A To detect and test small electric charges
B To calculate the amount of electric charge flowing through the conductor in the given interval of time
C To find out the presence of antimatter
D To test the presence of magnetic field.
Electroscope is used
Which of the following statements are incorrect?
1.A change in state will result in a change in volume.
2.A change in state will result in a change in substance.
3.A change in state will result in a change in weight.
4.A change in state will result in a change in mass.
A1 and 4
B2 and 3
C2, 3 and 4
DAll of these
___________ is separated from water by a method different from the method used to separate the other three substances given in the options.
C Coffee powder
D Chalk powder
How can be wrong
How many different shapes are there in the figure?
the correct answer should be 5 as there is a circle square triangle rectangle and semi-circle
Consider a vehicle going on a horizontal road towards east. Neglect any force due to air. The frictional force on the vehicle by the road
A Is towards east if the vehicle is accelerating
B Is zero if the vehicle is moving with a uniform velocity
C Must be towards east
D Must be towards west.
Some letters are given which are numbered 1, 2, 3, 4 and 5 followed by four options containing the combination of these numbers. Find the combination of numbers so that letters are arranged accordingly to form a meaningful word.
K S I C T
1 2 3 4 5
A 2, 5, 3, 1, 4
B 2, 3, 5, 1, 4
C 2, 5, 3, 4, 1
D 2, 1, 5, 3, 4
Match the following columns and select the correct option.
|a. Vitamin A||(i) Scurvy|
|b. Vitamin B||(ii) Anaemia|
|c. Vitamin C||(iii) Night blindness|
|d. Vitamin D||(iv) Beri-Beri|
A a - (v), b - (ii), c - (iii), d - (iv)
B a - (iii), b - (iv), c - (i), d - (v)
C a - (iv), b - (iii), c - (v), d - (ii)
D a - (iii), b - (iv), c - (ii), d - (v)
Which of the following represents the correct decreasing order of boiling points of the given liquids.
A Paraffin wax > Diesel > Kerosene > Petrol
B Diesel > Kerosene > Petrol > Paraffin wax
C Kerosene > Petrol > Paraffin wax > Diesel
D Petrol > Paraffin wax > Diesel > Kerosene
Select the incorrect statements among the following:
(i) Bitumen is used for metalling the roads.
(ii) Some inexhaustible natural resources like coal, petroleum and natural gas formed from the dead remains of living organisms are known as fossil fuels.
(iii) Many useful substances are obtained from coal (commercial importance), so it is also called as ‘Black gold’.
(iv) Natural gas is used as a starting material for the manufacture of a number of chemicals and fertilisers.
A (i) and (ii) only
B (ii) and (iii) only
C (ii) and (iv) only
D (i), (ii) and (iv) only