- It will expand
- It will shrink in size
- Its size will remain unchanged
- Will depend on air pressure
- D
-
Balloon weight became less and hydrogen gas weight became height. Due to extra upthrust balloon rises up.
Everyday Science MCQs
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Mud houses are cooler in summers and warmer in winters as compared to brick houses because:
- Mud is good conductor
- Mud is a bad conductor
- Mud is a neutral insulator by nature
- Cooling in summers and sunlight coming through holes causes warming in winters
- B
-
Mud is bad conducted of heat as compare to wood or metal.
Mud or Clay neither allows heat to enter the mud house nor allows to exit heat.
A place of metal becomes hot when it lies in the sun through:
- Conduction
- Convection
- Radiation
- Heat Energy
- C
Which vitamin is formed by action of sunlight on the skin?
- Vitamin A
- Vitamin B
- Vitamin C
- Vitamin D
- D
-
Skin absorbs UV B radiations and converted them into D3.
Vitamin D is obtained from Fish, Egg, Cheese, Beef etc.
An instrument designed to testing the purity of milk is called:
- Hydrometer
- Monometer
- Milometer
- Lactometer
- D
-
Louis Heusner invented Lactometer on 8 May 1877.
He was a Physician.
Lactometer works on the Archimedes Principle.
The most abundant elements in sea water are:
- Sodium and Potassium
- Sodium and Calcium
- Sodium and Chlorine
- Chlorine and Iodine
- C
-
There are found six elements in sea water which are Chlorine, Sodium, Calcium, Magnesium, Sulfur and Potassium.
Ph of sea water is 7.5 to 8.4.
Coolants in refrigerators and air conditioners contribute to what environmental hazard?
- Acid Rain
- Ozone Depletion
- Oil Spillage
- Global Warming
- B
-
Some refrigerators are extremely harmful for Ozone layer and greenhouse gases also.
Normal temperature of human body is:
- 37 C
- 39 C
- 33 C
- 35 C
- A
-
Normal temperature of human body is 98.6 F.
Nuclear Energy is obtained from:
- Silicon
- Plutonium
- Uranium
- Thorium
- C
-
Nuclear Energy originates from splitting of Uranium atoms.
This function is called Fission.
This fission procedure produces steam that helps to produce Nuclear Energy.
Nuclear Power Plants do not burn fuel.
When current flows through a wire it generates _____
- Ionic Field
- Magnetic Field
- Mechanical Field
- Gravitational Field
- B
-
When current flows through a wire, it generates magnetic field around it.