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Science Questions

Practice 71 Science questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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71
Total Questions
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1
Easy
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70
Medium
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Hard
Practice by Exam:General Awareness(39)General Knowledge(15)General Studies(11)General Knowledge and General Awareness(3)Chemistry(1)Environmental Studies(1)Hindi Language and Literature(1)

About Science — practice questions, PYQs & concepts

Science is a frequently-tested topic on General Awareness, General Knowledge, General Studies. ExamTest.live currently lists 71 Science questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

Science weight in competitive exams

Across our Science question bank, the largest sources are General Awareness (39), General Knowledge (15), General Studies (11), General Knowledge and General Awareness (3) and Chemistry (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 1 easy Science questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right — the explanation often surfaces a faster approach you can reuse.

All Science Questions(1–71 of 71)

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Q1mediummcqGeneral AwarenessCompetitive Exam2026
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Which antimicrobial enzymes are present in milk?
Q2mediummcqGeneral AwarenessCompetitive Exam2026
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Our brain mainly depends on which of the following food?
Q3mediummcqGeneral AwarenessCompetitive Exam2026
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In physics, steradian is a unit of:
Q4mediummcqGeneral Knowledge and General AwarenessSSC CPO 20242026
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What are the thin filamentous extensions found in the cell wall of motile bacterial cells called?
Q5mediummcqGeneral AwarenessSSC CHSL Previous Year Paper2026
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Which of the following is NOT an example of a viral disease?
Q6mediummcqGeneral AwarenessSSC CGL2026
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1 joule is equal to 1 ________
Q7mediummcqGeneral AwarenessSSC CGL2026
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The gustatory receptors in human beings detect ________
Q8mediummcqGeneral AwarenessSSC CGL2026
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What is the mass number of Deuterium?
Q9mediummcqGeneral AwarenessSSC CGL2026
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When the medium surrounding the cell is a hypotonic solution, the cell is likely to ________
Q10mediummcqGeneral AwarenessSSC CGL2026
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Ethanol reacts with sodium leading to the evolution of which gas?
Q11mediummcqGeneral AwarenessSSC CGL2026
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Find the kinetic energy (in J) possessed by a body of mass 20 kg moving with a velocity of 4 m/s.
Q12mediummcqGeneral Knowledge and General AwarenessSSC CPO 20242026
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Select the name of the hydrocarbon with the structural formula .
Q13mediummcqGeneral AwarenessSSC CGL2026
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________ which are used in refrigerators, air conditioners and aerosol sprays.
Q14mediummcqGeneral AwarenessSSC CGL2026
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Who Invented LCD Projector?
Q15mediummcqGeneral AwarenessSSC CHSL Previous Year Paper2026
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Which of the following laws can be explained as 'An object remains in a state of rest or of uniform motion in a straight line unless compelled to change that state by an applied force.'?
Q16mediummcqGeneral KnowledgeSSC CGL2026
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Who won Nobel prize for Physics in 2015?
Q17mediummcqChemistryMock Test2026
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Which of the following is an example of an ionic compound?
Q18mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
Nobel prize for inventing Vitamin K in 1943 was given to _________ .
Q19mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
An adult human being normally passes about 1 to _________ of urine in 24 hours.
Q20mediummcqGeneral AwarenessMock Test2026
Which day is celebrated as World Meteorological Day?
Q21mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
There are some plastics which when moulded once, cannot be softened by heating. These are called:
Q22mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
A resting person normally has a pulse rate between _________ beats per minute.
Q23mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
During fertilization in living beings, fusion of male and female gametes takes place to form a cell called:
Q24mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
Blood clot is formed because of the presence of certain cells in the blood, called:
Q25mediummcqGeneral KnowledgeIndian Competitive Exams2026
The light from the Sun reaches the Earth in about how much time?
Q26mediummcqHindi Language and LiteraturePractice Paper2026
मानव जीवन पर ग्रहों और तारों के प्रभाव के अध्ययन को क्या कहते हैं?
Q27mediummcqGeneral KnowledgeCompetitive Exams2026
How many hydrogen atoms are there in a molecule of acetylene?
Q28mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
Which among the following is NOT an example of synthetic fibres?
Q29mediummcqGeneral StudiesUP Police Assistant Operator Exam2026
Who was the first Indian to win the Nobel Prize in Physics?
Q30easymcqEnvironmental StudiesCompetitive Exams2026
A renewable and non-renewable energy source are different because:
Q31mediummcqGeneral KnowledgeCompetitive Exams2026
What are Lina and Klotho?
Q32mediummcqGeneral AwarenessMock Test2026
Which ancient Indian text is known as the 'Science of Ayurveda'?
Q33mediummcqGeneral KnowledgeUP Police Constable2026
Who is known as the 'Father of Geometry'?
Q34mediummcqGeneral KnowledgeUP Police Constable Previous Year Paper2026
Who invented the jet engine?
Q35mediummcqGeneral KnowledgeCompetitive Exam2026
The International Day for the Preservation of the Ozone Layer is observed annually on:
Q36mediummcqGeneral StudiesCompetitive Exams2026
Darwin and Wallace were both strongly influenced by the book "An Essay on the Principle of Population" written by:
Q37mediummcqGeneral StudiesCompetitive Exams2026
Target tissue of insulin is:
Q38mediummcqGeneral StudiesWBCS Prelims 20212026
Shanti Swarup Bhatnagar Prize is awarded in the field of
Q39mediummcqGeneral AwarenessIndian Competitive Exam2026
The following are three processes of reproduction in plants:(a) Vegetative,(b) Sexual,(c) AsexualWhich of them is adopted by algae?
Q40mediummcqGeneral AwarenessStaff Selection Commission2026
The 'Blood Sugar' disease is also known as:
Q41mediummcqGeneral AwarenessStaff Selection Commission2026
Identify the option that arranges the speed of light in descending order in different mediums.
Q42mediummcqGeneral AwarenessStaff Selection Commission2026
Which of the following is a unicellular organism?
Q43mediummcqGeneral AwarenessStaff Selection Commission2026
Which of the following pairs is correctly matched?
Q44mediummcqGeneral Knowledge and General AwarenessSSC CPO 20242026
Identify the number of electrons found in the outermost shell of a halogen atom.
Q45mediummcqGeneral AwarenessIndian Competitive Exams2026
Which metallic element is called 'ferromagnetic' because of its strong attraction?
Q46mediummcqGeneral AwarenessIndian Competitive Exams2026
Which glands help in digestion in the stomach?
Q47mediummcqGeneral AwarenessIndian Competitive Exams2026
Rickets is caused by deficiency of:
Q48mediummcqGeneral AwarenessStaff Selection Commission2026
Who contributed in the development of the periodic table?
Q49mediummcqGeneral AwarenessIndian Competitive Exam2026
Which of the following has the same dimension as that of torque?
Q50mediummcqGeneral AwarenessIndian Competitive Exam2026
What is the atomic number of lithium?
Q51mediummcqGeneral AwarenessUP Police Constable2026
______ propounded the inheritance of acquired character.
Q52mediummcqGeneral AwarenessUP Police Constable2026
Which of the following is a man-made fibre that was made without using any natural raw material (from plant or animal)? It was prepared from coal, water and air. It was the first fully synthetic fibre.
Q53mediummcqGeneral AwarenessUP Police Constable2026
Out of the following options, choose the name of a spore-producing plant:
Q54mediummcqGeneral AwarenessUP Police Constable2026
The vascular tissue that transports water and nutrients in plants is called the ______.
Q55mediummcqGeneral AwarenessUP Police Constable2026
Damaged CFLs and fluorescent tubes should be disposed off safely because they contain ______ vapour, which is toxic in nature.
Q56mediummcqGeneral KnowledgeCompetitive Exams2026
For a patient suffering from COPD, the ‘C’ stands for:
Q57mediummcqGeneral AwarenessStaff Selection Commission2026
Which of the following statements is correct about nutrients?
Q58mediummcqGeneral AwarenessSSC CGL2026
What are bases that are soluble in water called?
Q59mediummcqGeneral AwarenessSSC CGL2026
Identify a substance that is NOT an allotrope of carbon.
Q60mediummcqGeneral AwarenessSSC CGL2026
Identify a mobile source of food.
Q61mediummcqGeneral KnowledgePractice Paper2026
On which date is “International Day of Light” celebrated each year ?
Q62mediummcqGeneral AwarenessCompetitive Exams2026
Which of the following statements is NOT true about angiosperms?
Q63mediummcqGeneral AwarenessCompetitive Exams2026
Dry Ice is the solid form of:
Q64mediummcqGeneral AwarenessCompetitive Exams2026
A special property of acids and bases is their ability to _______ each other’s properties.
Q65mediummcqGeneral KnowledgeCompetitive Exams2026
Which of the following is a nocturnal animal?
Q66mediummcqGeneral KnowledgeCompetitive Exams2026
Baking soda, the common cooking ingredient, has which of the following chemical name?
Q67mediummcqGeneral KnowledgeCompetitive Exams2026
What is the SI unit for the measurement of pressure?
Q68mediummcqGeneral KnowledgeCompetitive Exams2026
Sphalerite is an ore of:
Q69mediummcqGeneral AwarenessUP Police Constable2026
In plants/trees, after fertilisation the ovary matures to form the:
Q70mediummcqGeneral KnowledgeCompetitive Exams2026
Who is known as the ‘Father of Indian Chemistry’?
Q71mediummcqGeneral KnowledgeCompetitive Exams2026
-40 degrees Fahrenheit is equal to how many degrees on the Celsius scale?

Frequently Asked Questions

How many Science questions are on ExamTest.live?▼
We have 71 Science questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Science MCQs free?▼
Yes. All Science questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Science questions?▼
Science questions are commonly asked in General Awareness, General Knowledge, General Studies, General Knowledge and General Awareness, Chemistry. You can filter by exam using the links above.
How do I practice Science questions effectively?▼
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.