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Science High Order Thinking Skills (HOTs) - 2 - Class 10 MCQ


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10 Questions MCQ Test Olympiad Preparation for Class 10 - Science High Order Thinking Skills (HOTs) - 2

Science High Order Thinking Skills (HOTs) - 2 for Class 10 2024 is part of Olympiad Preparation for Class 10 preparation. The Science High Order Thinking Skills (HOTs) - 2 questions and answers have been prepared according to the Class 10 exam syllabus.The Science High Order Thinking Skills (HOTs) - 2 MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Science High Order Thinking Skills (HOTs) - 2 below.
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Science High Order Thinking Skills (HOTs) - 2 - Question 1

A compound ‘Z’ with the formula H2O is essential for all known forms of life.
Compound (Z) contains

Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 1

Water (H2O) has two O–H single bonds in its bent molecular structure.

Science High Order Thinking Skills (HOTs) - 2 - Question 2

Which of the following statements regarding the structure of atoms is/are correct?
I. Protons and neutrons are located in the nucleus.
II. Electrons are found in orbitals around the nucleus.
III. The mass of an electron is equal to the mass of a proton.
IV. Neutrons have no charge.

Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 2
Protons and neutrons are located in the nucleus, electrons are found in orbitals around the nucleus, and neutrons have no charge. The mass of an electron is much smaller than that of a proton.
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Science High Order Thinking Skills (HOTs) - 2 - Question 3

Read the given passage carefully and fill in the blanks by selecting an appropriate option.
In an electric circuit, the (i) is the component that provides energy to the circuit. The (ii) is the component that uses electrical energy to do work. (iii) is used to control the flow of current. (iv) provides a path for the current to flow. If there is a break in the (v) , the circuit will not work.

Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 3

The battery provides energy, the bulb uses electrical energy, the switch controls current flow, wires provide a path, and a break in the wire means the circuit won't work.

Science High Order Thinking Skills (HOTs) - 2 - Question 4
Read the following paragraph about forces and select the incorrect statement regarding them.
Forces are interactions that cause objects to accelerate or deform. They can be classified as contact forces, such as friction and tension, or non-contact forces, such as gravity and magnetic forces. Newton's laws of motion describe the behavior of forces in relation to the motion of objects. Forces are vector quantities, meaning they have both magnitude and direction.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 4
Forces are scalar quantities is incorrect because forces are vector quantities as they have both magnitude and direction.
Science High Order Thinking Skills (HOTs) - 2 - Question 5

Select the incorrect statement.

Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 5

The Earth's atmosphere is primarily composed of nitrogen (about 78%) and oxygen (about 21%), with trace amounts of other gases including argon, carbon dioxide, and neon.

Science High Order Thinking Skills (HOTs) - 2 - Question 6

A mineral ‘W’ with the formula NaCl is commonly used in cooking.
Compound (W) contains

Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 6

Sodium chloride (NaCl) is composed of ionic bonds between Na+ and Cl- ions.

Science High Order Thinking Skills (HOTs) - 2 - Question 7
Which of the following processes is an example of a chemical change?
I. Rusting of iron
II. Melting of ice
III. Burning of wood
IV. Boiling of water
Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 7
Chemical changes result in the formation of new substances. Rusting of iron and burning of wood are chemical changes, while melting of ice and boiling of water are physical changes.
Science High Order Thinking Skills (HOTs) - 2 - Question 8
Read the given passage carefully and fill in the blanks by selecting an appropriate option.
In a nuclear reactor, (i) are used to slow down the neutrons. (ii) is used as a fuel. The (iii) controls the rate of the nuclear reaction by absorbing neutrons. The (iv) is used to cool the reactor core and transfer heat. The entire process is enclosed within a (v) .
Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 8
In a nuclear reactor, the moderator slows down neutrons, uranium is the fuel, control rods absorb neutrons to control the reaction, coolant transfers heat, and the reactor vessel encloses the process.
Science High Order Thinking Skills (HOTs) - 2 - Question 9
Read the given paragraph about atoms and select the incorrect statement regarding them.
Atoms are the smallest units of matter that retain the properties of an element. They consist of a nucleus containing protons and neutrons, surrounded by electrons in energy levels or shells. Atoms combine to form molecules through chemical bonds, which can be ionic or covalent. Elements are defined by the number of protons in their atoms.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 9
Neutrons have a positive charge is incorrect because neutrons are neutral particles with no charge.
Science High Order Thinking Skills (HOTs) - 2 - Question 10
Select the incorrect statement.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 2 - Question 10
Non-metals generally have low melting and boiling points compared to metals.
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