Heat Test

Result

Heat Test - 3

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Mercury is filled in a glass flask of volume 500 cu cm at 0°C. The coefficient of cubical expansion of mercury is 182 ´ l0^-6/°C and that of glass is 30 ´ l0^-6/°C. If the temperature of the flask is increased to 100°C, then the amount of Mercury that has over flown out is

A
30 cm³

B
18.2 cm³

C
15.2 cm³

D
7.6 cm³

E
3 cm³
Question 2
1 / -0

In a thermometer the boiling and freezing points are marked as 125° and 25°. It reads 75°. Then the corresponding Celsius scale is

A
25°C

B
40°C

C
45°C

D
50°C

E
80°C
Question 3
1 / -0

Calorie is the unit of______.

A
Temperature

B
Work

C
Pressure

D
Force

E
Energy

Solution

A calorie is a unit of energy defined as the amount of heat needed to raise the temperature of a quantity of water by one degree. The calorie was first introduced by Nicolas Clément, as a unit of heat energy, in lectures during the years 1819–1824.
The modern (small) calorie is defined as the amount of energy needed to increase the temperature of 1 gram of water by 1°C (or 1 K, which is the same increment). The definition depends on the atmospheric pressure and the starting temperature.
Hence, the correct option is (E).
Question 4
1 / -0

The difference between the two temperatures in Celsius scale is 100°. Then the difference between their corresponding Fahrenheit scales is

A
100°F

B
200°F

C
180°F

D
150°F

E
175°F
Question 5
1 / -0

If the readings on Celsius and Fahrenheit scale of thermometers read the same numerical value when placed on a substance, then the temperature of the substance measured is

A
-40^oC

B
40^oC

C
0^oC

D
32^oC

E
-32^oC
Question 6
1 / -0

The change in time period of a simple pendulum is dependent on the temperature according the relation , where t is the time period of the pendulum, T is the change in temperature and is the coefficient of linear expansion of the suspended wire. If a simple pendulum is fast by 0.5 seconds at 10°C and is slow by 1.5 seconds at 40°C, then the temperature at which it will oscillate with correct time period is

A
20°C

B
25°C

C
30°C

D
35°C

E
40°C
Question 7
1 / -0

The volume of a metallic sphere increases by X % on increasing the temperature by T°C. Then the coefficient of linear expansion of the metal is

A

B

C

D

E
Question 8
1 / -0

A glass vessel of volume 600 cu cm at 20°C contains certain amount of Mercury. The amount of Mercury that it should contain at 20°C such that the empty space in the container is same for at all temperatures is [Coefficient of linear expansion of glass is 0.8 x 10^-5/°C and the coefficient of cubical expansion of Mercury is 18 x 10^-5/°C]

A
60 cu m

B
70 cu cm

C
60 cu cm

D
80 cu cm

E
80 cu m
Question 9
1 / -0

The length of a glass rod is found to be 1m on a meter scale made of Copper when both were at 50°C. The copper scale is correct at 0°C. If the coefficient of linear expansion of Copper and glass are 1.7 x 10^-5 /°C and 0.8 x 10^-5 /°C, then the length of the glass rod at 0°C is

A
1.045 m

B
1.0045 m

C
1.0045 cm

D
1.045 cm

E
1.45 m
Question 10
1 / -0

The string of a simple pendulum is of length 1 m at 25°C and made of steel. Its time period is given by the expression. If the temperature of the surroundings increases to 45°C, then the difference in number of oscillations made by it in one hour due to the increase in temperature is
(Coefficient of linear expansion of steel = 1.1 x 10^-6 per degree Celsius)

A
5

B
12

C
15

D
18

E
25
Question 11
1 / -0

A steel sphere of diameter 50 cm is resting on a circular ring made up of Brass of radius 24.8 cm. Both the measurements are at room temperature of 20°C. If the coefficient of linear expansion of Steel and Brass are 1.2 x 10^-5/°C and 1.8 x 10^-5/°C, then the temperature at which the sphere will fall down is

A
1400 °C

B
1500 °C

C
1286°C

D
1386 °C

E
1186 °C
Question 12
1 / -0

The lengths of the rods at two different temperatures T₁ and T₂ are found to be X and Y. Then the length of the rod at another temperature T₃is

A

B

C

D

E
Question 13
1 / -0

A container having certain amount of liquid expels 1/200^th of its mass on heating through a temperature range of 200°C. Then the apparent coefficient of expansion of the liquid is

A
3.5 x 10^-5 /°C

B
2.25 x 10^-5 /°C

C
2.75 x 10^-5 /°C

D
2.5 x 10^-5 /°C

E
4 x 10^-5 /°C
Question 14
1 / -0

The change in temperature required to increase the length of a rod by 0.12% of its original lenght L is_____ (Given that the coefficient of linear expansion is 1.2 x 10^-5 /°C)

A
50°C

B
100°C

C
75°C

D
80°C

E
30°C
Question 15
1 / -0

The door of a running refrigerator inside a closed room was left open. Which of the following observations will be seen?

A
The room will be warmed up gradually.

B
The temperature of the room will remain unaffected.

C
The room will become as cold as the refrigerator.

D
The room will be cooled slightly.
Question 16
1 / -0

The difference between the Fahrenheit scale and Celsius scale of a temperature is 80. The temperature in Celsius scale is

A
70°C

B
30°C

C
60°C

D
80°C

E
100°C
Question 17
1 / -0

Railway tracks are usually laid during winter times. The rails are of length 10 m. The difference in peak temperatures in India is 50°C. Then the length of the gap between the two rails that should accommodate the expansion of rails due to the change in temperature is
(Coefficient of Linear expansion of Iron = 1.2 x 10^-5/°C)

A
10 mm

B
6 mm

C
8 mm

D
6 cm

E
10 cm
Question 18
1 / -0

The coefficients of linear expansion of Copper and Nickel are 1.7 x 10^-5 /°C and 1.2 x 10^-5 /°C respectively. The lengths of the copper strip such that the difference in length between it and the Nickel strip is always 20 cm at all temperatures is

A
68 cm

B
48 cm

C
40 cm

D
38 cm

E
80 cm
Question 19
1 / -0

There are two rings one made up of Copper of radius 1.59 cm and the other of Nickel of radius 1.6cm. The temperature at which one will fit into the other is
(Coefficients of linear expansion of Copper and Nickel are 1.7 x 10^-5 /°C and 1.2 x 10^-5 /°C respectively)

A
1289°C

B
1177°C

C
1377°C

D
1277°C

E
1227°C
Question 20
1 / -0

A cubic crystal of dimension 3 x 10^-12 m at 293 K, has coefficient of linear expansion along its length as 13 x 10^-7 /°C but along breadth and height it has the coefficient of linear expansion of 231 x 10^-7 /°C. If temperature of the crystal is increased to 393 K, then the change in volume is

A
1.2825 x 10^-37 cu cm

B
1.2825 x 10^-36 cu m

C
1.2825 x 10^-37 cu m

D
1.2285 x 10^-37 cu m

E
1.2528 x 10^-37 cu m