Everyday Science Mcqs (2021)

Computer Mcqs (754)

Math Solutions (1)

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  • Which is the largest organ in the human body?
    1. Liver
    2. Heart
    3. Skin
    4. Kidney

  • A light sensitive device that converts drawing, printed text or other images into digital form is___________?
    1. Keyboard
    2. Scanner
    3. OMR
    4. None of these

  • What is the purpose of inserting wallpaper in Microsoft Word?
    1. To add visual interest to the document
    2. To adjust the page margins
    3. To change the font style
    4. To create page headers and footers

  • Which of the following is used as a lubricant?
    1. Graphite
    2. Silica
    3. Iron oxide
    4. Diamond

  • Which of the following was first to be discovered in the chromospheres of the sun?
    1. Krypton
    2. Xenon
    3. Neon
    4. Helium

  • The two elements that are frequently used for making transistors are :
    1. Boron and aluminium
    2. Silicon and Germanium
    3. Iridium and Tungston
    4. None of these

  • Permanent hardness of water can be removed by adding __________?
    1. Chlorine
    2. Washing soda
    3. Bleaching powder
    4. None of these

  • In fireworks,the green flame is produced because of __________?
    1. Sodium
    2. Barium
    3. Mercury
    4. Potassium

  • Lingxi-03, developed by Galaxy Space, was launched using a ___________ carrier rocket.
    1. Long March-3D
    2. Long March-2D
    3. Vertical March-3D
    4. Orbital March-2D

  • When in the part of its orbit closest to the Sun, Pluto has an atmosphere of nitrogen and methane similar to Triton';s, but what happens when it is farther from the Sun ?
    1. These gases are not present
    2. These gases are like plasma
    3. These gases are frozen
    4. These gases are volatile

  • Titan, a moon of __________ , and Triton, a moon of _________ , have atmospheres mainly of _________.
    1. Saturn, Jupiter, Hydrogen
    2. Uranus, Neptune, Nitrogen
    3. Saturn, Neptune, Nitrogen
    4. Mars, Venus, Hydrogen

  • The planet retains an atmosphere when?
    1. Gravity is low and temperature of atmosphere is great
    2. Gravity and temperature both are great
    3. Gravity and temperature both are constant
    4. Gravity is great and temperature of atmosphere is low

  • Atmospheric pressure is the force (per unit-area) perpendicular to a unit-area of planetary surface, as determined by _________.
    1. Mass of vertical column of atmospheric gases
    2. Mass of horizontal column of atmospheric gases
    3. Weight of vertical column of atmospheric gases
    4. Mass of vertical and weight of horizontal of atmospheric gases

  • ___________ begins at 690 to 1,000 km from the surface, and extends to roughly 10,000 km.
    1. Troposphere
    2. Mesosphere
    3. Exosphere
    4. Stratosphere

  • Which of the following is true about Ionosphere?
    1. Its density is lesser at short distances from planetary surface in morning and further decreases as ionosphere rises at night-time, thereby allowing a greater range of radio frequencies to travel greater distances
    2. Its density is greater at short distances from tplanetary surface in daytime and decreases as ionosphere rises at night-time, thereby allowing a greater range of radio frequencies to travel greater distances
    3. Its density is greater at long distances from planetary surface in daytime and further increases as ionosphere rises at night-time, thereby allowing a greater range of radio frequencies to travel greater distances
    4. None of the above

  • Atmosphere is held in place by?
    1. Pressure of the planetary body
    2. Gravity of the planetary body
    3. Charge of the planetary body
    4. Heat of the planetary body

  • The thermosphere extends from an altitude of ________ to the base of ________ at ________?
    1. 75 km, Mesosphere, 670 km
    2. 80 km, Ionosphere, 680 km
    3. 85 km, Exosphere, 690 km
    4. 90 km, Ozone Layer , 690 km

  • _________ is the layer wherein most meteors are incinerated before reaching the surface.
    1. Troposphere
    2. Stratosphere
    3. Mesosphere
    4. Ionosphere

  • The mesosphere ranges from ________ to _________?
    1. 46 km to 85 km
    2. 48 km to 85 km
    3. 50 km to 85 km
    4. 52 km to 85 km

  • Stratosphere is the atmospheric layer that absorbs most of __________ that Earth receives from the Sun.
    1. Infrared radiation
    2. Ultraviolet radiation
    3. Ozone layer
    4. Radio waves

  • _________ is the atmospheric layer that absorbs most of the ultraviolet radiation that Earth receives from the Sun.
    1. Troposphere
    2. Stratosphere
    3. Mesosphere
    4. Ionosphere

  • Stratosphere is present at an altitude between _________.
    1. 15 km and 35 km
    2. 17 km and 35 km
    3. 18 km and 35 km
    4. 19 km and 35 km

  • _________ extends from the top of the troposphere to the bottom of the mesosphere.
    1. Thermosphere
    2. Ionosphere
    3. Stratosphere
    4. None of the above

  • The height of the troposphere varies between ____________.
    1. 7 km at equator and 17 km at poles
    2. 17 km at equator and 7 km at poles
    3. 18 km at equator and 8 km at poles
    4. 8 km at equator and 18 km at poles

  • ____________ contains 75–80 % of the mass of the atmosphere.
    1. Stratosphere
    2. Mesosphere
    3. Thermosphere
    4. Troposphere