Maths and Science test by Abhinav Sir

Interactive Science and Math Test

Welcome to the Interactive Science and Math Test! This test includes 38 multiple-choice questions covering mathematics and science. You have 1 hour to complete it. Each question has four options, styled with borders to mimic a professional online test. Correct answers will be highlighted in green, incorrect in red. After clicking Submit Test, view your score, percentage, rank, and a detailed analysis with explanations. Best of luck!

Time Remaining: 60:00

1. The denominator of a fraction is greater than the numerator by 8. If the numerator is increased by 17 and the denominator is decreased by 1, the number obtained is \(\frac{3}{2}\). Find the fraction.

\(\frac{13}{21}\) \(\frac{12}{20}\) \(\frac{15}{23}\) \(\frac{14}{22}\)

2. The angles of a triangle are in the ratio 2:3:4. Find the angles of the triangle.

40°, 60°, 80° 30°, 60°, 90° 20°, 30°, 40° 45°, 60°, 75°

3. A steamer goes downstream from one point to another in 9 hours. It covers the same distance upstream in 10 hours. If the speed of the stream is 1 km/hr, find the speed of the steamer in still water.

5 km/hr 6 km/hr 7 km/hr 8 km/hr

4. If \((x-1)^2 + (x+1)^2 = (x-2)^2\), find the value of \(x\).

\(\frac{2}{3}\) 1 \(\frac{4}{3}\) 2

5. The sum of the digits of a two-digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, find the original number.

39 48 57 66

6. Two motorcyclists start from the same point and travel in opposite directions. The speed of one is 7 km/h more than the other. If the distance between them after 2 hours is 34 km, find the speed of the faster motorcyclist.

12 km/h 10 km/h 17 km/h 24 km/h

7. Divide 150 into three parts such that the second number is five-sixths the first and the third number is four-fifths the second.

60, 50, 40 50, 60, 40 60, 50, 50 70, 50, 30

8. Divide 4500 into two parts such that 5% of the first part is equal to 10% of the second part.

2700, 1800 3000, 1500 2500, 2000 2000, 2500

9. Find \(x\) if \(5\left(x - \frac{3}{4}\right) = 2(x - 1)\).

\(\frac{1}{7}\) \(\frac{7}{12}\) \(\frac{1}{4}\) \(\frac{1}{2}\)

10. If \(\frac{x}{2} + \frac{x}{3} + \frac{x}{4} = 4\frac{1}{2}\), find the value of \(x\).

6 9 12 15

11. If \(\frac{x-4}{x-1} = \frac{x-1}{x-4}\), find the value of \(x\).

2 3 4 \(\frac{5}{2}\)

12. If \(\frac{2x-1}{3} + \frac{3x+2}{4} = \frac{x+1}{2}\), find \(x\).

\(\frac{4}{11}\) 2 3 4

13. The carrier of the malaria-causing protozoan is:

Aedes mosquito Anopheles mosquito Culex mosquito Housefly

14. Alcohol can be converted into vinegar by the action of:

Yeast Acetobacter Lactobacillus Rhizobium

15. Microorganisms that reproduce and multiply only in cells of other organisms:

Bacteria Fungi Viruses Protozoa

16. What is meant by fermentation? Who discovered it?

Conversion of sugars to alcohol, Louis Pasteur Conversion of proteins to energy, Alexander Fleming Conversion of fats to acids, Robert Koch Conversion of starch to sugars, Joseph Lister

17. Two food materials preserved by using oil or vinegar:

Pickles, Fish Milk, Cheese Bread, Butter Fruits, Vegetables

18. Microorganisms that can fix atmospheric nitrogen in the soil:

Lactobacillus Rhizobium Yeast Penicillium

19. Two food materials preserved by deep freezing:

Milk, Cheese Meat, Ice cream Bread, Butter Pickles, Jams

20. One disease spread by breathing air containing microorganisms:

Cholera Tuberculosis Typhoid Malaria

21. Scientist who discovered the smallpox vaccine:

Louis Pasteur Edward Jenner Alexander Fleming Robert Koch

22. Two human diseases caused by fungi:

Ringworm, Athlete’s foot Malaria, Dengue Cholera, Typhoid AIDS, Tuberculosis

23. One biological nitrogen-fixer:

Yeast Rhizobium Lactobacillus Penicillium

24. One disease spread through infected food or water:

Tuberculosis Malaria Cholera Dengue

25. Preservatives used in preservation of fruits as jams and jellies:

Sugar, Salt Vinegar, Oil Sugar, Citric acid Alcohol, Water

26. How do microorganisms help in cleaning the environment? What are antibiotics? Precautions while taking antibiotics?

Decompose waste, medicines from microorganisms, take as prescribed Produce oxygen, chemical drugs, take anytime Fix nitrogen, vaccines, no precautions needed Cause diseases, synthetic drugs, take with food

27. Match the microorganism with their action (select the correct matching):

(i) Bacteria → Cholera, (ii) Rhizobium → Nitrogen fixation (i) Yeast → Bread, (ii) Lactobacillus → Curd All pairs correctly matched (i) Virus → AIDS, (ii) Penicillin → Antibiotics

28. Match the category of microorganisms (select the correct matching):

Amoeba: Protozoa, Lactobacillus: Bacteria Chlamydomonas: Algae, Penicillium: Fungi Yeast: Fungi, HIV: Virus All pairs correctly matched

29. Match mosquito-related questions (select the correct matching):

Aedes: Dengue, Anopheles: Malaria Aedes: Malaria, Anopheles: Dengue Plasmodium: Virus, Female mosquito All pairs incorrectly matched

30. Disease after consuming mutton with nausea, vomiting, diarrhea, and abdominal pain:

Malaria Food poisoning Tuberculosis Dengue

31. Microorganism capable of converting sugar into alcohol and carbon dioxide:

Lactobacillus Yeast Rhizobium Penicillium

32. The first antibiotic called penicillin was extracted from:

Bacteria Fungi Virus Protozoa

33. What is food poisoning? How is it caused?

Illness from contaminated food, caused by bacteria Illness from overeating, caused by excess food Illness from fasting, caused by lack of food Illness from allergies, caused by pollen

34. Microorganism used in bread-making that makes the dough rise:

Lactobacillus Yeast Rhizobium Penicillium

35. Full form of HIV and the disease caused by it:

Human Immunodeficiency Virus, AIDS Human Infection Virus, Malaria Human Influenza Virus, Flu Human Immunity Virus, Tuberculosis

36. Why are antibiotics not effective against common cold and flu?

Caused by bacteria Caused by viruses Caused by fungi Caused by protozoa

37. How do microorganisms help in increasing soil fertility?

By producing oxygen By fixing nitrogen By causing diseases By producing antibiotics

38. Insect that carries the dengue virus:

Anopheles mosquito Aedes mosquito Culex mosquito Housefly