Question 1
the Q. The shape of our Milky Way Galaxy is:
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Spiral
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Elliptic
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Lenticular
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None of these
Explanation:
The Milky Way is a barred spiral galaxy with distinct spiral arms extending from its central region.
Question 2
Humidity is measured by:
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Polarimeter
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Hygrometer
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Hydrometer
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None of these
Explanation:
A hygrometer measures the amount of moisture present in the air.
Question 3
Electromagnetic radiation with higher energy than visible radiation is:
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Infrared rays
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Microwave rays
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X-rays
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None of these
Explanation:
X-rays have higher energy and shorter wavelengths than visible light.
Question 4
The bond of H₂O is:
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Ionic metallic
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Non-polar covalent
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Polar covalent
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Metallic
Explanation:
Water has polar covalent bonds due to unequal sharing of electrons between oxygen and hydrogen.
Question 5
Which of the following is a p-type semiconductor?
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Germanium
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Gallium
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Silicon
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None of these
Explanation:
Gallium acts as a p-type dopant by creating holes when introduced into semiconductors.
Question 6
In which atmospheric layer is the temperature about -90°C?
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Mesosphere
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Troposphere
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Thermosphere
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None of these
Explanation:
The mesosphere is the coldest atmospheric layer, with temperatures dropping to about -90°C.
Question 7
Which of the following is a non-sedimentary rock?
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Limestone
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Sandstone
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Granite
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None of these
Explanation:
Granite is an igneous rock formed from cooled magma, unlike sedimentary rocks.
Question 8
Greenhouse gases absorb:
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Infrared radiations
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Visible radiations
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Ultraviolet radiations
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None of these
Explanation:
Greenhouse gases trap heat by absorbing infrared radiation emitted from Earth’s surface.
Question 9
______ is information about physical working conditions, work schedule, and the organizational and social context of the job:
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Job specification
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Job context
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Work activities
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None of these
Explanation:
Job context refers to environmental and social factors surrounding a job.
Question 10
The current recommended limit of arsenic in drinking water by WHO is:
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10 µg/L
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100 µg/L
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200 µg/L
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None of these
Explanation:
WHO sets the safe limit for arsenic in drinking water at 10 µg/L.
Question 11
______ is the primary consideration in designing knowledge-based AI systems:
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Analogy
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Efficacy
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Efficiency
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None of these
Explanation:
Efficiency ensures optimal performance and resource use in AI systems.
Question 12
Which of the following is not a basic step in creating a worksheet?
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Copy the worksheet
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Save workbook
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Modify the worksheet
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None of these
Explanation:
Copying a worksheet is not a fundamental step in its creation process.
Question 13
A set of programs that consists of a full set of documents is termed a:
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Database
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File
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Software package
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None of these
Explanation:
A software package is a collection of related programs and documentation.
Question 14
The size of a MAC address in a computer network is:
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16 bits
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32 bits
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48 bits
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None of these
Explanation:
A MAC address is 48 bits long and uniquely identifies network devices.
Question 15
What is a non-reducing sugar?
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Maltose
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Sucrose
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Glucose
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None of these
Explanation:
Sucrose is a non-reducing sugar because it lacks a free aldehyde or ketone group.
Question 16
Which of the following is an unsaturated fat?
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Cheese
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Butter
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Vegetable oil
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None of these
Explanation:
Vegetable oils contain unsaturated fats with double bonds in their structure.
Question 17
Which vitamin is known as the 'blood clotting vitamin'?
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Vitamin A
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Vitamin B
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Vitamin K
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None of these
Explanation:
Vitamin K is essential for the synthesis of blood-clotting factors.
Question 18
Planets between Earth and the Sun are:
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Mercury and Venus
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Venus and Mars
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Mars and Mercury
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None of these
Explanation:
Mercury and Venus orbit closer to the Sun than Earth.
Question 19
Aedes aegypti transmits:
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Malaria
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Dengue fever
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Typhoid fever
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None of these
Explanation:
Aedes aegypti mosquito transmits dengue fever and other viral diseases.
Question 20
Which organelle is called the powerhouse of the cell?
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Mitochondria
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Ribosome
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Plastid
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None of these
Explanation:
Mitochondria generate ATP, providing energy for cellular activities.