Browse topic-based Basic Science And Engineering practice sets.
12 practice sets · Page 1 of 1
Which section of IT Act deals with punishment for identity theft?
66 A
66 B
66 C
66 D
None of the above
Correct Answer: C — 66 C
Explanation:
Section 66C of the Information Technology Act, 2000 deals with punishment for identity theft. The IT Act is the primary law in India dealing with cybercrime and electronic commerce. It has 13 chapters and 90 sections.
What is known as the Costa Rican approach in the area of public health?
Equal spending on health and defence.
Defence budget to be more than health budget.
Not having an army to maintain to be able to spend more on public health.
Spending on the health of the armymen.
Correct Answer: C — Not having an army to maintain to be able to spend more on public health.
Explanation:
The Costa Rican approach in the area of public health refers to not having an army to maintain, so that the country can spend more on public health. Costa Rica is a Central American country that gives priority to the health of its people and saves money by not possessing any army, using those funds for public health instead.
In the orthographic projection, projection lines are ____ to each other.
Parallel
Perpendicular
Inclined
Any of the above
Correct Answer: A — Parallel
Explanation:
Parallel. Orthographic projection is a parallel projection technique in which the parallel lines of sight are perpendicular to the projection plane. Unlike perspective projection where the observer is at a finite distance, in orthographic projection the observer is at infinity, making all projection lines parallel to each other.
Which of the following is the best way to identify workplace hazards?
Waiting for an incident to occur
Relying on employees to report accidents
Ignoring small risks
Conducting regular safety inspections
Correct Answer: D — Conducting regular safety inspections
Explanation:
Conducting regular safety inspections. The best and most reliable way to identify workplace hazards is to perform regular safety inspections. These help in detecting unsafe conditions before they cause harm, checking machines and tools for risks, ensuring safety standards are followed, and preventing accidents rather than reacting to them.
One millimetre is the same as:
0.01 m
0.1 m
0.01 cm
0.1 cm
Correct Answer: D — 0.1 cm
Explanation:
0.1 cm. We know that 1 m = 100 cm = 1000 mm. Therefore 1 mm = 100/1000 cm = 0.1 cm.
Which of the following best describes the primary function of a digital signature in electronic communication?
It automatically archives all electronic documents for future reference.
It encrypts the entire message content to ensure privacy.
It verifies the identity of the sender and ensures the integrity of the message.
It allows the recipient to edit the document before signing.
Correct Answer: C — It verifies the identity of the sender and ensures the integrity of the message.
Explanation:
A digital signature is a cryptographic mechanism that acts as a virtual fingerprint, uniquely identifying the sender and ensuring the content has not been tampered with during transmission. It confirms the sender's identity and guarantees data integrity — making it an essential tool in secure electronic communication.
Which of the following statements about geometric figures is/are true?
• Geometric shapes are enclosed figures made by joining two or more points, lines, or curves.
• Geometric shapes are always open-ended and made up of only straight lines.
Which of the statements given above is/are correct?
Only statement 2 is true
Only statement 1 is true
Neither statement 1 nor 2 is true
Both statements 1 and 2 are true
Correct Answer: B — Only statement 1 is true
Explanation:
Only statement 1 is true. Geometric shapes are indeed defined as enclosed figures formed by connecting points, lines, or curves, and they can be squares, circles, triangles, and more. Statement 2 is false because geometric shapes are not open-ended — they are enclosed.
The correct sequence of different layers of the atmosphere from the surface of the Earth upwards is
Troposphere, Stratosphere, Ionosphere, Mesosphere
Stratosphere, Troposphere, Ionosphere, Mesosphere
Troposphere, Stratosphere, Mesosphere, Ionosphere
Stratosphere, Troposphere, Mesosphere, Ionosphere
Correct Answer: C — Troposphere, Stratosphere, Mesosphere, Ionosphere
Explanation:
The atmosphere is divided into five layers from Earth's surface upwards: Troposphere (0–18 km) — where all weather changes occur; Stratosphere (18–50 km) — contains the ozone layer; Mesosphere (50–85 km) — temperature drops to about -95°C; Thermosphere (85–500 km) — includes the ionosphere, helps in radio transmission; Exosphere (500–1600 km) — uppermost layer. Note: The Ionosphere is a part of the Thermosphere, not a separate layer above the Mesosphere.
A cube with a mass of 5.74 g occupies a volume of 1.2 cm³. The density (in g/cm³) expressed with the correct number of significant figures is _______.
4.783
4.7833
4.8
4.78
Correct Answer: C — 4.8
Explanation:
4.8 g/cm³. Density = Mass / Volume = 5.74 / 1.2 = 4.7833... g/cm³.
Which of the following is true?
In a kitchen, aluminium vessels are used because aluminium is a good conductor of heat.
Both insulators and conductors allow heat to pass through them easily.
Wood is a good conductor of heat.
Plastic is a good conductor of heat.
Correct Answer: A — In a kitchen, aluminium vessels are used because aluminium is a good conductor of heat.
Explanation:
Aluminium heats up quickly and evenly, which helps in faster cooking. That is why pressure cookers, pans, and utensils are commonly made of aluminium. It is lightweight, cheap, and a very good conductor of heat.
In a certain weight lifting machine, a weight of 1 kN is lifted by an effort of 40 N. While the weight moves up by 100 mm, the point of application of effort moves by 5 m. Find the efficiency of the machine.
50%
40%
70%
60%
Correct Answer: A — 50%
Explanation:
50%. Efficiency = Useful work output / Work input. Load = 1 kN = 1000 N, load displacement = 100 mm = 0.1 m, effort = 40 N, effort displacement = 5 m.
Which type of thermometer is used for measuring the internal temperature of ice?
Digital thermometer
Laboratory thermometer
Infrared thermometer
Clinical thermometer
Correct Answer: B — Laboratory thermometer
Explanation:
Laboratory thermometer. Laboratory thermometers work on the principle of thermal expansion. A liquid (usually mercury or alcohol) is contained within a narrow capillary tube.
