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Class 7 Science ch 2 mcq. We covered all the Class 7 Science ch 2 mcq in this post for free so that you can practice well for the exam.
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mcq on General Science for Class 7 Students
Tin is used to coat Food cans instead of zinc because:
a) Tin is more affordable than zinc
b) Tin melts at a lower temperature than zinc
c) Zinc is chemically more reactive than tin
d) Tin is more reactive than zinc
Option c – Zinc is chemically more reactive than tin
It’s important to check the manufacturing date of oil-fried Food items before buying because oils can become rancid due to:
a) Oxidation
b) Reduction
c) Hydrogenation
d) Loss of viscosity
Option a – Oxidation
What causes the conversion of milk into curd?
a) Fungi
b) Bacteria
c) Viruses
d) None of the above
Option b – Bacteria
The stimulating compound found in tea belongs to which group?
a) Tannins
b) Steroids
c) Alkaloids
d) Flavonoids
Option c – Alkaloids
Which of the following oils is richest in protein content?
a) Castor oil
b) Sunflower oil
c) Soybean oil
d) Safflower oil
Option a – Castor oil
What is commonly added to noodles to enhance their flavor?
a) Saffron
b) Cinnamon
c) Olive oil
d) Ajinomoto
Option d – Ajinomoto
Vinegar is the common name for:
a) Ethanoic Acid
b) Nitric Acid
c) Sulphuric Acid
d) Tartaric Acid
Option a – Ethanoic Acid
Among the following, which sugar has the highest sweetness level?
a) Fructose
b) Glucose
c) Maltose
d) Sucrose
Option a – Fructose
Which nutrient is found in the least amount in milk?
a) Calcium
b) Protein
c) Vitamin C
d) Carbohydrates
Option c – Vitamin C
Though mother’s milk is considered a complete Food for infants, it lacks:
a) Iron
b) Calcium
c) Magnesium
d) Potassium
Option d – Potassium
Which of the following items is derived from a tree?
a) Asafoetida
b) Bitumen
c) Tincal
d) None of the above
Option a – Asafoetida
Which of the following nutrients is present in the least amount in milk?
a) Calcium
b) Protein
c) Carbohydrates
d) Vitamin C
Option d – Vitamin C
What is the reason for using baking soda in dough preparation?
a) To increase moisture
b) To add flavor
c) To improve color
d) To produce carbon dioxide
Option d – To produce carbon dioxide
What does the term ‘Operation Flood’ relate to?
a) Managing floods
b) Increasing milk production
c) Controlling Population growth
d) Growing more Food grains
Option b – Increasing milk production
What best describes mixed farming?
a) Cultivation of multiple crops methodically
b) Growing both rabi and kharif crops
c) Growing crops along with Animal Husbandry
d) Cultivating both fruits and vegetables
Option c – Growing crops along with Animal Husbandry
Which among these is classified as a millet crop?
a) Wheat
b) Rice
c) Sorghum
d) Maize
Option c – Sorghum
Which crop is most suitable for sloped hills with over 200 cm of annual rainfall?
a) Jute
b) Cotton
c) Maize
d) Tea
Option d – Tea
Monoculture is a characteristic feature of:
a) Commercial grain cultivation
b) Slash-and-burn Agriculture
c) Farming for self-consumption
d) Eco-friendly farming
Option a – Commercial grain cultivation
Which crops are primarily grown under subsistence Agriculture?
a) Millets and rice
b) Cotton and tobacco
c) Tea and coffee
d) Fruits and vegetables
Option a – Millets and rice
The Dapog method of raising rice seedlings originated in:
a) China
b) Indonesia
c) Japan
d) The Philippines
Option d – The Philippines
Which farming method is a type of subsistence Agriculture?
a) Shifting cultivation
b) Large-scale commercial farming
c) Intensive and extensive farming
d) Organic farming
Option a – Shifting cultivation
Which soil type is most favorable for growing cotton?
a) Black (Regur) soil
b) Red soil
c) Bhangar soil
d) Khadar soil
Option a – Black (Regur) soil
Which state accounts for the majority of soybean cultivation in India?
a) Andhra Pradesh
b) Madhya Pradesh
c) Maharashtra
d) Rajasthan
Option b – Madhya Pradesh
What gives milk its white appearance?
a) Lactose
b) Albumins
c) Carotenes
d) Caseins
Option d – Caseins
How does refrigeration help preserve Food?
a) By killing microbes
b) By slowing down chemical reactions
c) By stopping enzyme activity
d) By forming an ice seal over Food
Option b – By slowing down chemical reactions
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