Choose the correct option.
1. The acid present in the stomach
A. Kills the harmful bacteria that may enter along with the food
B. Protects the stomach lining from harmful substances
C. Digest starch into simpler sugars
D. Make the medium alkaline
2. Boojho wants to know the name of insects which has piercing and sucking mouth
parts that pierce food Items to enable sucking of internal fluids?
A. Mosquito
B. Housefly
C. Cockroach
D. Ant
3. The inner walls of the small intestine have millions of tiny finger like projections called
A. Villi
B. Tracheae
C. Appendix
D. Oesophagus
4. X and Y measured their body temperature.X found its to be 98.6 °F and Y recorded 37
°C. Which of the followng statement is true?
A. X has a higher body temperature than Y.
B. X has a lower body temperature than Y.
C. Both have normal body temperature.
D. Both are suffering from fever.
5. Which of the following is an acid-base indicator?
A. Vinegar
B. Lime water
C. Turmeric
D. Baking soda
6. A Solution Changes The Colour Of Turmeric Indicator From Yellow To Red. The
Solution Is:
A. Basic
B. Acidic
C. Neutral
D. None of these.
7. Identify the acid present in Tamarind
A. Tannic acid
B. Lactic acid
C. Tartaric acid
D.Citric acid
8. Ammonia is found in many household products, such as window cleaners. It turns red
litmus blue. What is its nature?
A. Basic
B. Acidic
C. Neutral
D. None of the above
9. Name the source from which litmus solution is obtained.
A. Fungus
B. Virus
C. Lichens
D. Bacteria
10. Iron Pillar Near The Qutub Minar In Delhi Is Famous For The Following Facts. Which
Of These Facts Is Responsible For Its Stability?
A. It is more than 7 metre height
B. It weighs about 6000 kg
C. It was built more than 1600 years ago
D. It has no rust after such long period
11. Which One Is A Physical Change?
A. Melting of ice
B. Melting of wax
C. Formation of steam from water D. All the above
12. Beating aluminium to make aluminium foil
A. Physical change
B. Chemical change
C. Both
D.None
13. Which factor influences soil formation?
A. Climate
B. Vegetation
C. Parent rock
D. all of these
14. The removal of land surface by water, wind and ice is known as
A. Erosion
B. Weathering
C. Percolation
D. Retention
15. The type of soil suitable for growing masoor dal is
A. Sandy soil
B. Loamy soil
C. Clayey soil
D. Black soil
16. Gills are respiratory organs in
A. Fish
B. Earthworm
C. Amoeba
D. Cockroach
17. During respiration
A. Water is released
B. Food is digested
C. Energy is released
D. Energy is absorbed
18. During aerobic respiration, glucose is broken down into ____________ using oxygen.
A. Carbon dioxide and hydrogen
B. Oxygen and water
C. Carbon dioxide and water
D. Nitrogen and water
19. The fluid part of the blood is called
A. Plasma
B. RBC
C. WBC
D. Platelets
20. In a tall tree, which force is responsible for pulling water and minerals from the soil?
A. Gravitational force
B. C.Transportation force
C. Conduction
D. Suction force
1. The acid present in the stomach
A. Kills the harmful bacteria that may enter along with the food
B. Protects the stomach lining from harmful substances
C. Digest starch into simpler sugars
D. Make the medium alkaline
2. Boojho wants to know the name of insects which has piercing and sucking mouth
parts that pierce food Items to enable sucking of internal fluids?
A. Mosquito
B. Housefly
C. Cockroach
D. Ant
3. The inner walls of the small intestine have millions of tiny finger like projections called
A. Villi
B. Tracheae
C. Appendix
D. Oesophagus
4. X and Y measured their body temperature.X found its to be 98.6 °F and Y recorded 37
°C. Which of the followng statement is true?
A. X has a higher body temperature than Y.
B. X has a lower body temperature than Y.
C. Both have normal body temperature.
D. Both are suffering from fever.
5. Which of the following is an acid-base indicator?
A. Vinegar
B. Lime water
C. Turmeric
D. Baking soda
6. A Solution Changes The Colour Of Turmeric Indicator From Yellow To Red. The
Solution Is:
A. Basic
B. Acidic
C. Neutral
D. None of these.
7. Identify the acid present in Tamarind
A. Tannic acid
B. Lactic acid
C. Tartaric acid
D.Citric acid
8. Ammonia is found in many household products, such as window cleaners. It turns red
litmus blue. What is its nature?
A. Basic
B. Acidic
C. Neutral
D. None of the above
9. Name the source from which litmus solution is obtained.
A. Fungus
B. Virus
C. Lichens
D. Bacteria
10. Iron Pillar Near The Qutub Minar In Delhi Is Famous For The Following Facts. Which
Of These Facts Is Responsible For Its Stability?
A. It is more than 7 metre height
B. It weighs about 6000 kg
C. It was built more than 1600 years ago
D. It has no rust after such long period
11. Which One Is A Physical Change?
A. Melting of ice
B. Melting of wax
C. Formation of steam from water D. All the above
12. Beating aluminium to make aluminium foil
A. Physical change
B. Chemical change
C. Both
D.None
13. Which factor influences soil formation?
A. Climate
B. Vegetation
C. Parent rock
D. all of these
14. The removal of land surface by water, wind and ice is known as
A. Erosion
B. Weathering
C. Percolation
D. Retention
15. The type of soil suitable for growing masoor dal is
A. Sandy soil
B. Loamy soil
C. Clayey soil
D. Black soil
16. Gills are respiratory organs in
A. Fish
B. Earthworm
C. Amoeba
D. Cockroach
17. During respiration
A. Water is released
B. Food is digested
C. Energy is released
D. Energy is absorbed
18. During aerobic respiration, glucose is broken down into ____________ using oxygen.
A. Carbon dioxide and hydrogen
B. Oxygen and water
C. Carbon dioxide and water
D. Nitrogen and water
19. The fluid part of the blood is called
A. Plasma
B. RBC
C. WBC
D. Platelets
20. In a tall tree, which force is responsible for pulling water and minerals from the soil?
A. Gravitational force
B. C.Transportation force
C. Conduction
D. Suction force
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Answer- The above question is from Science chapters of class 7.
Given question: Choose the correct option.
(Options in the question itself.)
1. The acid present in the stomach
2. Boojho wants to know the name of insects which has piercing and sucking mouth parts that pierce food Items to enable sucking of internal fluids.
3. The inner walls of the small intestine have millions of tiny finger like projections called
4. X and Y measured their body temperature.X found its to be 98.6 °F and Y recorded 37 °C. Which of the following statement is true?
5. Which of the following is an acid-base indicator?
6. A solution changes the colour of Turmeric Indicator from yellow to red. The solution is:
7. Identify the acid present in Tamarind
8. Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?
9. Name the source from which litmus solution is obtained.
10. Iron Pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its stability?
11. Which one is a Physical Change?
12. Beating aluminium to make aluminium foil
13. Which factor influences soil formation?
14. The removal of land surface by water, wind and ice is known as
15. The type of soil suitable for growing masoor dal is
16. Gills are respiratory organs in
17. During respiration
18. During aerobic respiration, glucose is broken down into ____________ using oxygen.
19. The fluid part of the blood is called
20. In a tall tree, which force is responsible for pulling water and minerals from the soil?
Answer:
1. A. Kills the harmful bacteria that may enter along with the food
⇒ Hydrochloric acid is present in the stomach. The bacteria entering the stomach along with food gets killed due to HCl.
2. A. Mosquito
⇒ A mosquito has sucking mouth parts which helps in piercing food items so that it can suck all the fluids present in the food.
3. A. Villi
⇒ Villi are finger-like projections present inside small intestine which help in absorption of the food by increasing surface area.
4. C. Both have normal body temperature.
⇒ In Celsius scale, normal body temperature of humans is 37° C.
In Fahrenheit scale, normal body temperature of humans is 98.6° F.
5. C. Turmeric
⇒ Turmeric is a natural acid-base indicator. It turns bases into red and for acids, it remains yellow.
6. A. Basic
⇒ Turmeric is a natural acid-base indicator. It turns bases into red and for acids, it remains yellow.
7. C. Tartaric acid
⇒ Tamarind contains Tartaric acid.
8. A. Basic
⇒ Bases turn red litmus into blue.
9. C. Lichens
⇒ Lichens are the organisms from which litmus which is purple coloured solution is obtained.
10. D. It has no rust after such long period
⇒ The Iron Pillar, near Mehrauli is known for its no rusting of the metal even after so many years.
11. D. All the above
⇒ Physical changes are the changes which do not lead to the formation of new products.
12. A. Physical change
⇒ Physical changes are the changes which do not lead to the formation of new products.
13. D. All of these
⇒ Factors which influence the formation of soil are: Climate, Natural Vegetation. Parent Rock type, etc.
14. A. Erosion
⇒ The process by which the surface of a land gets removed due to the agents like: wind, water, ice, etc. is known as erosion.
15. B. Loamy soil
⇒ Loamy soil is needed for growing masoor dal as it is more suitable than other soils and can drain water better.
16. A. Fish
⇒ Fish take in dissolved oxygen using gills.
17. C. Energy is released
⇒ Respiration leads to breakdown of glucose, thus releasing energy.
18. C. Carbon dioxide and water
⇒ The respiration in the presence of oxygen to release carbon dioxide and water is called aerobic respiration.
19. A. Plasma
⇒ Blood has three types of cells: RBCs, WBCs and platelets and the fluid part in which these cells are present is called plasma..
20. D. Suction force
⇒ The force which helps in pulling of water and minerals in a tree from the soil against the gravity is called suction force.