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Curriculum-aligned learning paths for students in Classes 6-12.

CBSE
Class 8
Vocational Education
Kaushal Bodh
Hydroponics: Growing Plants without Soil

Question Bank

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Question Bank: Hydroponics: Growing Plants without Soil

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Start with curated question sets, move into full module views when needed, and keep discovering related practice without losing your place in the chapter.

Question Bank - Hydroponics: Growing Plants without Soil

View all (103)
Q1.

What does the term 'hydroponics' primarily refer to?

Single Answer MCQ
Q-00165912
View explanation
Q2.

Which method of hydroponics utilizes a nutrient solution flowing over plant roots?

Single Answer MCQ
Q-00165913
View explanation
Q3.

What is a primary benefit of hydroponics over traditional soil farming?

Single Answer MCQ
Q-00165914
View explanation
Q4.

Which Greek word does 'hydro' in hydroponics originate from?

Single Answer MCQ
Q-00165915
View explanation
Q5.

Which of the following is NOT a technique used in hydroponics?

Single Answer MCQ
Q-00165916
View explanation
Q6.

What is one of the biggest challenges that hydroponics aims to solve?

Single Answer MCQ
Q-00165917
View explanation
Q7.

Which nutrient management method helps maintain plant health in hydroponics?

Single Answer MCQ
Q-00165918
View explanation
Q8.

What is 'vertical farming' in the context of hydroponics?

Single Answer MCQ
Q-00165919
View explanation
Q9.

What can excessive use of chemical fertilizers in traditional farming lead to?

Single Answer MCQ
Q-00165920
View explanation
Q10.

Which technique in hydroponics utilizes a wicking system to deliver nutrients?

Single Answer MCQ
Q-00165921
View explanation
Q11.

What is one ecological benefit of hydroponics compared to traditional farming?

Single Answer MCQ
Q-00165922
View explanation
Q12.

Why is maintaining a proper pH level important in hydroponics?

Single Answer MCQ
Q-00165923
View explanation
Q13.

What is one common microgreen grown in hydroponics?

Single Answer MCQ
Q-00165924
View explanation
Q14.

What is a 'polyhouse' in hydroponics?

Single Answer MCQ
Q-00165925
View explanation
Q15.

In hydroponics, what is the primary purpose of liquid organic manure?

Single Answer MCQ
Q-00165926
View explanation
Q16.

Which condition is critical for hydroponics to thrive?

Single Answer MCQ
Q-00165927
View explanation
Q17.

What is the ideal pH range for hydroponic solutions?

Single Answer MCQ
Q-00165928
View explanation
Q18.

Which element is NOT typically considered an essential nutrient for plants in hydroponics?

Single Answer MCQ
Q-00165929
View explanation
Q19.

In hydroponics, which method is used to support plant roots without soil?

Single Answer MCQ
Q-00165930
View explanation
Q20.

What role does oxygen play in hydroponic systems?

Single Answer MCQ
Q-00165931
View explanation
Q21.

Which hydroponic system involves a reservoir and a floating platform?

Single Answer MCQ
Q-00165932
View explanation
Q22.

Why is it important to monitor nutrient levels in hydroponics?

Single Answer MCQ
Q-00165933
View explanation
Q23.

Which environmental condition must be carefully controlled in a hydroponic unit?

Single Answer MCQ
Q-00165934
View explanation
Q24.

Which material is commonly used as a growth medium in hydroponics?

Single Answer MCQ
Q-00165935
View explanation
Q25.

What could happen if the temperature in a hydroponic unit is too high?

Single Answer MCQ
Q-00165936
View explanation
Q26.

What is one key advantage of hydroponics over traditional soil-based farming?

Single Answer MCQ
Q-00165937
View explanation
Q27.

In hydroponics, which type of light is often used for optimal growth?

Single Answer MCQ
Q-00165938
View explanation
Q28.

What is a potential problem with using synthetic nutrients in hydroponics?

Single Answer MCQ
Q-00165939
View explanation
Q29.

In a hydroponic setup, what is the purpose of using liquid organic manure?

Single Answer MCQ
Q-00165940
View explanation
Q30.

What can be a common misconception about hydroponics?

Single Answer MCQ
Q-00165941
View explanation
Q31.

Which of the following is a basic hydroponic system supported by wicks?

Single Answer MCQ
Q-00165942
View explanation
Q32.

What is the main advantage of using hydroponics in urban farming?

Single Answer MCQ
Q-00165943
View explanation
Q33.

In a Deep Water Culture (DWC) system, what is primarily submerged in the nutrient solution?

Single Answer MCQ
Q-00165944
View explanation
Q34.

Which nutrient solution component is critical for plant growth in hydroponics?

Single Answer MCQ
Q-00165945
View explanation
Q35.

How does the Nutrient Film Technique (NFT) work?

Single Answer MCQ
Q-00165946
View explanation
Q36.

What is an essential step to maintain the quality of water in hydroponics?

Single Answer MCQ
Q-00165947
View explanation
Q37.

In a hydroponic system, why is it important to oxygenate the nutrient solution?

Single Answer MCQ
Q-00165948
View explanation
Q38.

Which type of hydroponics allows for growing plants in a mist without any growing medium?

Single Answer MCQ
Q-00165949
View explanation
Q39.

What is organic liquid manure used for in hydroponics?

Single Answer MCQ
Q-00165950
View explanation
Q40.

What pH range is generally considered ideal for hydroponic growth?

Single Answer MCQ
Q-00165951
View explanation
Q41.

In hydroponics, what role does the growing medium play?

Single Answer MCQ
Q-00165952
View explanation
Q42.

What is the major risk of over-fertilization in hydroponics?

Single Answer MCQ
Q-00165953
View explanation
Q43.

What kind of light is typically preferred for hydroponic systems?

Single Answer MCQ
Q-00165954
View explanation
Q44.

Which of the following describes a key feature of NFT systems?

Single Answer MCQ
Q-00165955
View explanation
Q45.

What would you generally use to measure pH in a hydroponic system?

Single Answer MCQ
Q-00165956
View explanation
Q46.

What is the primary advantage of hydroponics over traditional soil-based methods?

Single Answer MCQ
Q-00165957
View explanation
Q47.

Which of the following hydroponic methods utilizes a nutrient film technique?

Single Answer MCQ
Q-00165958
View explanation
Q48.

In hydroponics, what role does the pH level of water play?

Single Answer MCQ
Q-00165959
View explanation
Q49.

Which hydroponic system is most suitable for small-scale urban farming?

Single Answer MCQ
Q-00165960
View explanation
Q50.

What does the term 'recirculating system' mean in hydroponics?

Single Answer MCQ
Q-00165961
View explanation
Q51.

Which of the following is a disadvantage of hydroponics?

Single Answer MCQ
Q-00165962
View explanation
Q52.

What is the primary function of a grow light in a hydroponic system?

Single Answer MCQ
Q-00165963
View explanation
Q53.

Which type of hydroponic system is most effective for larger plants?

Single Answer MCQ
Q-00165964
View explanation
Q54.

In an aeroponic system, how are plants nourished?

Single Answer MCQ
Q-00165965
View explanation
Q55.

Which growth factor can be finely controlled in hydroponics to ensure optimum growth?

Single Answer MCQ
Q-00165966
View explanation
Q56.

What is a common misconception about hydroponics?

Single Answer MCQ
Q-00165967
View explanation
Q57.

How does vertical farming relate to hydroponics?

Single Answer MCQ
Q-00165968
View explanation
Q58.

What technique can be used to prepare liquid organic manure for hydroponics?

Single Answer MCQ
Q-00165969
View explanation
Q59.

Why might hydroponics be considered a sustainable farming method?

Single Answer MCQ
Q-00165970
View explanation
Q60.

What is the primary benefit of growing microgreens in hydroponics?

Single Answer MCQ
Q-00165971
View explanation
Q61.

Which technique is NOT typically used in growing microgreens hydroponically?

Single Answer MCQ
Q-00165972
View explanation
Q62.

What is a key requirement for maintaining a hydroponic unit?

Single Answer MCQ
Q-00165973
View explanation
Q63.

Which microgreen is known for its vibrant purple color and unique flavor?

Single Answer MCQ
Q-00165974
View explanation
Q64.

What environmental advantage do hydroponic systems provide over traditional farming?

Single Answer MCQ
Q-00165975
View explanation
Q65.

What is the primary nutrient source for plants in a hydroponic system?

Single Answer MCQ
Q-00165976
View explanation
Q66.

Why are microgreens often considered nutrient-dense?

Single Answer MCQ
Q-00165977
View explanation
Q67.

Which is a common mistake when growing microgreens hydroponically?

Single Answer MCQ
Q-00165978
View explanation
Q68.

What type of climate is favorable for growing microgreens in a hydroponic setting?

Single Answer MCQ
Q-00165979
View explanation
Q69.

What is the maximum light duration recommended for microgreens during the growth phase?

Single Answer MCQ
Q-00165980
View explanation
Q70.

What role does organic liquid manure play in hydroponic systems?

Single Answer MCQ
Q-00165981
View explanation
Q71.

What is a benefit of growing microgreens in urban settings?

Single Answer MCQ
Q-00165982
View explanation
Q72.

What pH range is ideal for nutrient absorption in a hydroponic system?

Single Answer MCQ
Q-00165983
View explanation
Q73.

Which edible microgreen can be used to enhance salads for its peppery flavor?

Single Answer MCQ
Q-00165984
View explanation
Q74.

What is the process called where microgreens are harvested just after the first true leaves appear?

Single Answer MCQ
Q-00165985
View explanation
Q75.

What is the main purpose of maintaining a hydroponic system?

Single Answer MCQ
Q-00165986
View explanation
Q76.

Which aspect is crucial for ensuring nutrient availability in a hydroponic system?

Single Answer MCQ
Q-00165987
View explanation
Q77.

What term describes the process of recycling water in hydroponics?

Single Answer MCQ
Q-00165988
View explanation
Q78.

In hydroponics, what is the best method to prepare organic liquid manure?

Single Answer MCQ
Q-00165989
View explanation
Q79.

Which technique is commonly used to control the water level in a deep water culture (DWC) system?

Single Answer MCQ
Q-00165990
View explanation
Q80.

What effect does high humidity have on hydroponic systems?

Single Answer MCQ
Q-00165991
View explanation
Q81.

Which of the following is a potential issue in hydroponic systems if not monitored carefully?

Single Answer MCQ
Q-00165992
View explanation
Q82.

Which nutrient is critical for root development in a hydroponic system?

Single Answer MCQ
Q-00165993
View explanation
Q83.

What is one method for adjusting pH in a hydroponic system?

Single Answer MCQ
Q-00165994
View explanation
Q84.

What role does light play in a hydroponic system?

Single Answer MCQ
Q-00165995
View explanation
Q85.

What is a key advantage of vertical farming in hydroponics?

Single Answer MCQ
Q-00165996
View explanation
Q86.

What is the primary component of nutrient solutions in hydroponics?

Single Answer MCQ
Q-00165997
View explanation
Q87.

Which hydroponic system uses a thin film of nutrient solution to feed plants?

Single Answer MCQ
Q-00165998
View explanation
Q88.

How can over-fertilization affect a hydroponic system?

Single Answer MCQ
Q-00165999
View explanation
Q89.

What is an essential feature of a successful hydroponic system regarding nutrient delivery?

Single Answer MCQ
Q-00166000
View explanation
Q90.

What is the first step to ensure safety in a hydroponics setup?

Single Answer MCQ
Q-00166008
View explanation
Q91.

Which of the following is a common safety hazard in hydroponics?

Single Answer MCQ
Q-00166010
View explanation
Q92.

How should chemicals for hydroponics be stored safely?

Single Answer MCQ
Q-00166012
View explanation
Q93.

When should you wear protective gear while working in a hydroponics unit?

Single Answer MCQ
Q-00166014
View explanation
Q94.

Why is it important to regularly check the pH level in hydroponics?

Single Answer MCQ
Q-00166016
View explanation
Q95.

How can you prevent algal growth in a hydroponic system?

Single Answer MCQ
Q-00166018
View explanation
Q96.

What safety measure should be taken when using electrical equipment in hydroponics?

Single Answer MCQ
Q-00166020
View explanation
Q97.

When handling any fertilizers or chemicals, what is a strict rule to follow?

Single Answer MCQ
Q-00166022
View explanation
Q98.

What should you do if a chemical spill occurs in the hydroponics setting?

Single Answer MCQ
Q-00166024
View explanation
Q99.

What is the significance of labeling all chemicals and nutrients in a hydroponics system?

Single Answer MCQ
Q-00166025
View explanation
Q100.

Which practice enhances safety when maintaining hydroponic systems?

Single Answer MCQ
Q-00166026
View explanation
Q101.

What is a safe way to dispose of expired nutrients or chemicals used in hydroponics?

Single Answer MCQ
Q-00166027
View explanation
Q102.

Why is it important to ensure proper ventilation in a hydroponics system?

Single Answer MCQ
Q-00166028
View explanation
Q103.

What should you monitor to help prevent pests in hydroponic systems?

Single Answer MCQ
Q-00166029
View explanation
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