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Class 10 Exam  >  Class 10 Tests  >  Olympiad Preparation for Class 10  >  Science High Order Thinking Skills (HOTs) - 1 - Class 10 MCQ

Science High Order Thinking Skills (HOTs) - 1 - Class 10 MCQ


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10 Questions MCQ Test Olympiad Preparation for Class 10 - Science High Order Thinking Skills (HOTs) - 1

Science High Order Thinking Skills (HOTs) - 1 for Class 10 2024 is part of Olympiad Preparation for Class 10 preparation. The Science High Order Thinking Skills (HOTs) - 1 questions and answers have been prepared according to the Class 10 exam syllabus.The Science High Order Thinking Skills (HOTs) - 1 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) - 1 below.
Solutions of Science High Order Thinking Skills (HOTs) - 1 questions in English are available as part of our Olympiad Preparation for Class 10 for Class 10 & Science High Order Thinking Skills (HOTs) - 1 solutions in Hindi for Olympiad Preparation for Class 10 course. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free. Attempt Science High Order Thinking Skills (HOTs) - 1 | 10 questions in 15 minutes | Mock test for Class 10 preparation | Free important questions MCQ to study Olympiad Preparation for Class 10 for Class 10 Exam | Download free PDF with solutions
Science High Order Thinking Skills (HOTs) - 1 - Question 1
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An organic compound ‘X’ having molecular formula, C2H4O2 has melting point 290 K in its purest form and it often freezes during winter in cold climates. Compound (X) contains

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

The compound with molecular formula C2H4O2 is acetic acid. Its structure is CH3COOH, which includes two C-O single bonds and one C=O double bond.

Science High Order Thinking Skills (HOTs) - 1 - Question 2
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Which of the following elements has the highest electronegativity?
I. Sodium
II. Chlorine
III. Oxygen
IV. Fluorine

Detailed Solution for Science High Order Thinking Skills (HOTs) - 1 - Question 2
Electronegativity is the ability of an atom to attract electrons in a chemical bond. Fluorine is the most electronegative element on the periodic table.
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Science High Order Thinking Skills (HOTs) - 1 - Question 3
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Read the given passage carefully and fill in the blanks by selecting an appropriate option.

In photosynthesis, the plant uses carbon dioxide and water to produce glucose and oxygen. Chlorophyll, which is present in the (i) , captures the energy from (ii) . This energy is then used to convert (iii) and (iv) into glucose. The by-product of this process is (v).

Detailed Solution for Science High Order Thinking Skills (HOTs) - 1 - Question 3

Chlorophyll in the chloroplasts captures energy from sunlight, which is used to convert carbon dioxide and water into glucose, releasing oxygen as a by-product.

Science High Order Thinking Skills (HOTs) - 1 - Question 4
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Read the following paragraph about cells and select the incorrect statement regarding them.
Cells are the basic structural and functional units of living organisms. They can either be eukaryotic or prokaryotic. Eukaryotic cells have a nucleus enclosed within membranes, while prokaryotic cells do not. Cells reproduce through mitosis or meiosis, processes that ensure genetic continuity and diversity.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 1 - Question 4
Mitosis ensures genetic diversity is incorrect because mitosis ensures genetic continuity, not diversity.
Science High Order Thinking Skills (HOTs) - 1 - Question 5
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Select the incorrect statement.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 1 - Question 5

The correct statement is that the mass difference between the first and third member of the aldehyde homologous series is 14 a.m.u. (e.g., methanal to propanal).

Science High Order Thinking Skills (HOTs) - 1 - Question 6
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A gas ‘Y’ has the molecular formula CO2 and is a major greenhouse gas.
Compound (Y) contains
Detailed Solution for Science High Order Thinking Skills (HOTs) - 1 - Question 6

Carbon dioxide (CO2) has two C=O double bonds in its structure, making it a linear molecule with no single bonds.

Science High Order Thinking Skills (HOTs) - 1 - Question 7
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Which of the following equations represents a balanced chemical equation?
I. H2 + O2 → H2O
II. N2 + 3H2 → 2NH3
III. CO2 + H2 → CH4 + O2
IV. Na + Cl2 → NaCl
Detailed Solution for Science High Order Thinking Skills (HOTs) - 1 - Question 7

A balanced chemical equation has equal numbers of atoms of each element on both sides of the equation. Option B (N2 + 3H2 → 2NH3) is balanced.

Science High Order Thinking Skills (HOTs) - 1 - Question 8
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Read the given passage carefully and fill in the blanks by selecting an appropriate option.
The human digestive system consists of several organs. The (i) produces bile, which is stored in the (ii) . The bile helps in the digestion of (iii) in the (iv) . The undigested food is then passed into the (v) .
(i) (ii) (iii) (iv) (v)
Detailed Solution for Science High Order Thinking Skills (HOTs) - 1 - Question 8
The liver produces bile which is stored in the gallbladder. Bile aids in the digestion of fats in the small intestine, with undigested food passing into the large intestine.
Science High Order Thinking Skills (HOTs) - 1 - Question 9
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Read the given paragraph about photosynthesis and select the incorrect statement regarding it.
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose molecules. It occurs in chloroplasts, organelles containing the pigment chlorophyll. During photosynthesis, carbon dioxide and water are converted into glucose and oxygen. This process is essential for maintaining the oxygen levels in the atmosphere.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 1 - Question 9
Photosynthesis is essential for maintaining nitrogen levels in the atmosphere is incorrect because photosynthesis primarily maintains oxygen levels, not nitrogen.
Science High Order Thinking Skills (HOTs) - 1 - Question 10
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Select the incorrect statement.
Detailed Solution for Science High Order Thinking Skills (HOTs) - 1 - Question 10
Water is a polar molecule due to its asymmetrical shape and unequal sharing of electrons between hydrogen and oxygen.
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