The most suitable thermometer for measuring the boiling point of water is?

A. Alcohol Thermometer
B. Mercury Thermometer
C. Liquid Crystal Thermometer
D. Bimetallic Thermometer

Answer

Correct Answer: B. Mercury Thermometer

Detail about MCQs

The most suitable thermometer for measuring the boiling point of water is a mercury thermometer. Mercury thermometers are commonly used for measuring temperatures within the range of –38°C to 356°C (-36°F to 672°F), making them ideal for measuring the boiling point of water, which is typically around 100°C (212°F) at standard atmospheric pressure. Mercury thermometers provide accurate and reliable readings within this temperature range

The magnet always points in the same direction, if allowed to to move freely i.e towards North and South poles, because of?

A. A lot of metal deposits on North and South Poles
B. Earth is Hug Magnet
C. Gravitational Field
D. Due to attraction of North Pole and Repulsion of Western Pole

Answer

Correct Answer: D. Due to attraction of North Pole and Repulsion of Western Pole

Detail about MCQs

The correct answer is D. Due to the attraction of the North Pole and repulsion of the South Pole. This phenomenon is due to the Earth’s magnetic field, which has a north magnetic pole and a south magnetic pole. A magnet, if allowed to move freely, aligns itself with this magnetic field, with its north pole pointing towards the Earth’s geographic north pole and its south pole pointing towards the Earth’s geographic south pole. This behavior is because opposite magnetic poles attract each other, while like poles repel each other

An electric current can produce:

A. Chemical Effect
B. Magnetic Effect
C. Heating Effect
D. All of these

Answer

Correct Answer: D. All of these

Detail about MCQs

An electric current can indeed produce various effects. Let’s break down the options:

A. Chemical Effect: Electric current can cause chemical changes in certain materials, such as electrolysis, where a chemical reaction occurs due to the flow of electric current.

B. Magnetic Effect: When electric current flows through a conductor, it generates a magnetic field around it, known as the magnetic effect of electric current.

C. Heating Effect: When electric current passes through a conductor with resistance, such as a filament in a light bulb or a heating element in an electric stove, it generates heat due to the resistance of the material.

Therefore, the correct answer is:

D. All of these: All of the listed options are effects produced by electric currents.

What part of the wheelbarrow is the fulcrum?

A. Carrier
B. Handle
C. Wheel
D. Handler

Answer

Correct Answer: C. Wheel


Detailed About MCQs

The wheelbarrow’s effort arms are the handles that the person uses to lift up the heavy load in the barrow. The levers help the wheelbarrow to lift heavy loads with minimal effort. The resistance arms are located between the effort arm and the fulcrum. The wheel is the fulcrum that allows the wheelbarrow to pivot up and down.

What is called that disease or infection that is naturally transmissible from humans to vertebrate animals?

A. Reverse Zoonoses
B. Zoonoses
C. Anthroponosis
D. Both A and C

Answer

Correct Answer: D. Both A and C


Detailed About MCQs

Reverse zoonosis, also known as anthroponosis refers to pathogens reservoir in humans that are capable of being transmitted to other non-human animals.

What is called that disease or infection that is naturally transmissible from vertebrate animals to humans?

A. Arnos
B. Chord notes
C. Ananoses
D. Zoonoses

Answer

Correct Answer: D. Zoonoses


Detailed About MCQs

A Zoonoses is an infectious disease caused by a pathogen (an infectious agent, including bacteria, viruses, etc) that has jumped from non-human animals (usual vertebrates) to humans. Zoonoses have different modes of transmission.

In the Composition of the earth, Silicon is:

A. 5.00%
B. 27.72%
C. 46.60%
D. 52.5%

Answer

Correct Answer: B. 27.72%


Detailed About MCQs

Silicon makes up about 27.72% of the Earth’s crust. Silicon is the second most abundant element in Earth’s crust. Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor.
Major Elements in the Earth’s Crust

  • Oxygen 46.60%
  • Silicon 27.72%
  • Aluminum 8.13%
  • Iron 5.00%
  • Calcium 3.63%
  • Sodium 2.83%
  • Potassium 2.59%
  • Magnesium 2.09%

In the Composition of the earth, Oxygen is:

A. 5.00%
B. 27.72%
C. 46.60%
D. 52.5%

Answer

Correct Answer: C. 46.60%


Detailed About MCQs

Major’s element in the Earth’s crust consists of oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium. Oxygen is the chemical element with the symbol O and atomic number 8.
Major Elements in the Earth’s Crust

  • Oxygen 46.60%
  • Silicon 27.72%
  • Aluminum 8.13%
  • Iron 5.00%
  • Calcium 3.63%
  • Sodium 2.83%
  • Potassium 2.59%
  • Magnesium 2.09%

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