MP Police Constable GK
51. What is the correct unit to measure the distance in space?
A) Kilometers
B) Light years
C) Meters
D) Miles
B) Light years
Explanation: A light year is the distance that light travels in one year, and it is used to measure vast distances in space between stars and galaxies.
52. What is Dry Ice?
A) Solid carbon dioxide
B) Frozen water
C) Solid oxygen
D) Frozen nitrogen
A) Solid carbon dioxide
Explanation: Dry ice is the solid form of carbon dioxide (CO2). It is used for refrigeration and cooling because it sublimates directly from solid to gas without turning into liquid.
53. LPG gas used for cooking is a mixture of which gases?
A) Methane and Ethane
B) Propane and Butane
C) Oxygen and Nitrogen
D) Hydrogen and Methane
B) Propane and Butane
Explanation: Liquefied Petroleum Gas (LPG) used for cooking is a mixture of propane and butane gases. It is highly efficient and convenient for household use.
54. What is filled inside an electric bulb?
A) Hydrogen
B) Oxygen
C) Argon
D) Nitrogen
C) Argon
Explanation: Argon, an inert gas, is filled inside an electric bulb to prevent the tungsten filament from reacting with oxygen and burning out quickly.
55. Which mosquito’s bite causes Dengue fever?
A) Culex
B) Anopheles
C) Aedes
D) Mansonia
C) Aedes
Explanation: Dengue fever is transmitted by the bite of an Aedes mosquito, particularly Aedes aegypti. This mosquito is known for its black and white markings and primarily bites during the day.
56. When is the relative density of water maximum?
A) 0°C
B) 4°C
C) 10°C
D) 100°C
B) 4°C
Explanation: The relative density of water is maximum at 4°C. At this temperature, water reaches its highest density, which is why ice floats on water as it is less dense.
57. The “Blue Revolution” is related to?
A) Dairy production
B) Fisheries
C) Grain production
D) Poultry farming
B) Fisheries
Explanation: The “Blue Revolution” refers to the rapid development and growth of aquaculture or fish production, aimed at increasing food security and economic growth.
58. The “White Revolution” is related to?
A) Cotton production
B) Milk production
C) Salt production
D) Oilseeds production
B) Milk production
Explanation: The “White Revolution” in India, also known as Operation Flood, was initiated to increase milk production. It led to India becoming one of the largest producers of milk in the world.
59. Which state is famous for spice production?
A) Tamil Nadu
B) Kerala
C) Gujarat
D) Maharashtra
B) Kerala
Explanation: Kerala is famous for the production of spices like black pepper, cardamom, cloves, and cinnamon. It has historically been known as the “Spice Garden of India.”
60. Which is the largest state in India by area?
A) Madhya Pradesh
B) Uttar Pradesh
C) Rajasthan
D) Maharashtra
C) Rajasthan
Explanation: Rajasthan is the largest state in India by area. It covers approximately 342,239 square kilometers, making it the biggest state in terms of landmass.