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Science High Order Thinking Skills (HOTs) - 4 - Class 10 MCQ


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10 Questions MCQ Test Olympiad Preparation for Class 10 - Science High Order Thinking Skills (HOTs) - 4

Science High Order Thinking Skills (HOTs) - 4 for Class 10 2024 is part of Olympiad Preparation for Class 10 preparation. The Science High Order Thinking Skills (HOTs) - 4 questions and answers have been prepared according to the Class 10 exam syllabus.The Science High Order Thinking Skills (HOTs) - 4 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) - 4 below.
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Science High Order Thinking Skills (HOTs) - 4 - Question 1

A molecule ‘C’ with the formula CH4 is a simple hydrocarbon.
Compound (C) contains

Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 1

Methane (CH4) has four C–H single bonds in its tetrahedral structure.

Science High Order Thinking Skills (HOTs) - 4 - Question 2

Which of the following is a renewable source of energy?
I. Coal
II. Natural Gas
III. Wind
IV. Nuclear

Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 2
Wind is a renewable source of energy because it is generated by natural processes that are continually replenished.
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Science High Order Thinking Skills (HOTs) - 4 - Question 3

Read the given passage carefully and fill in the blanks by selecting an appropriate option.
In the periodic table, elements are arranged in order of increasing (i) . Elements in the same (ii) have similar properties. The (iii) elements are found on the left side of the table, and the (iv) elements are on the right side. The elements in the middle of the table are called (v) .
(i) (ii) (iii) (iv) (v)

Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 3
The periodic table arranges elements by increasing atomic number. Elements in the same group have similar properties, with metals on the left, nonmetals on the right, and transition metals in the middle.
Science High Order Thinking Skills (HOTs) - 4 - Question 4
Read the following paragraph about evolution and select the incorrect statement regarding it.
Evolution is the process by which species change over time through natural selection, mutation, and genetic drift. Charles Darwin proposed the theory of evolution by natural selection, which explains how species adapt to their environments over generations. Fossil records provide evidence of evolutionary changes over millions of years. Evolution is driven solely by genetic mutations.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 4
Evolution is driven solely by genetic mutations is incorrect because evolution is driven by various factors including natural selection, mutation, and genetic drift.
Science High Order Thinking Skills (HOTs) - 4 - Question 5
Select the incorrect statement.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 5
Electrons do not orbit the nucleus in fixed, circular paths; they exist in electron clouds or energy levels around the nucleus.
Science High Order Thinking Skills (HOTs) - 4 - Question 6

An alcohol ‘D’ with the formula C2H5OH is often used as a solvent.
Compound (D) contains

Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 6

Ethanol (C2H5OH) has one C–C single bond and one O–H single bond in its structure.

Science High Order Thinking Skills (HOTs) - 4 - Question 7
Which one of the following hormones regulates the amount of glucose in the blood?
I. Adrenaline
II. Thyroxine
III. Insulin
IV. Estrogen
Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 7
Insulin is a hormone produced by the pancreas that helps regulate blood glucose levels by facilitating the uptake of glucose into cells.
Science High Order Thinking Skills (HOTs) - 4 - Question 8
Read the given passage carefully and fill in the blanks by selecting an appropriate option.
In the respiratory system, the (i) is the organ where gas exchange occurs. Air enters through the (ii) , passes through the (iii) , and reaches the (iv) before finally entering the (v) where oxygen is exchanged for carbon dioxide.
(i) (ii) (iii) (iv) (v)
Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 8
Air enters through the mouth/nose, passes through the trachea, into the bronchi, and bronchioles, finally reaching the alveoli in the lungs for gas exchange.
Science High Order Thinking Skills (HOTs) - 4 - Question 9
Read the given paragraph about sound and select the incorrect statement regarding it.
Sound is a form of energy produced by vibrations that travel through a medium, such as air, water, or solids. The frequency of sound waves determines their pitch, with higher frequencies corresponding to higher pitches. Sound waves with higher amplitudes are perceived as louder. Doppler effect describes the change in frequency of sound waves due to the relative motion between the source and the observer.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 9
Sound waves with higher amplitudes are perceived as softer is incorrect because higher amplitude sound waves are perceived as louder
Science High Order Thinking Skills (HOTs) - 4 - Question 10
Select the incorrect statement.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 4 - Question 10
Sound waves do require a medium to propagate, but electromagnetic waves like light can travel through a vacuum.
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