CBSE Class 10 Social Science Manufacturing Industries MCQs Set 07

Answer: (a) Largest producer

Explanation:
1. India is the largest producer of raw jute in the world.

Teacher's Note:
a) India is the world's largest producer of raw jute.
b) It is the second-largest exporter of jute products, after Bangladesh.

Answer: (b) Bengaluru

Explanation:
1. Bengaluru has emerged as India's electronic capital, hosting major electronics and IT industries.

Teacher's Note:
a) Bengaluru is India's electronic capital.
b) It hosts a dense cluster of electronics and IT companies.

Answer: (b) Presence of high proportion of sulphur dioxide, carbon monoxide and air-borne particulate materials

Explanation:
1. Air pollution is caused by gases like sulphur dioxide, carbon monoxide and particulate matter, not water effluents, land waste, or noise.

Teacher's Note:
a) Sulphur dioxide, carbon monoxide and particulates cause air pollution.
b) The other options instead describe water, soil and noise pollution respectively.

Answer: (b) Bringing down regional disparities

Explanation:
1. Industries were set up in tribal/backward areas specifically to reduce regional disparities in development.

Teacher's Note:
a) Industrial development in backward areas aimed to reduce regional disparity.
b) This was a deliberate policy goal, distinct from broader unemployment/poverty measures.

Answer: (c) Clue (I) and (II)

Explanation:
1. Clues I and II directly and specifically describe the automobile industry's role in transport and its post-liberalisation growth; clue III lists an inaccurate set of locations, and clue IV is too generic to identify this specific industry.

Teacher's Note:
a) Transport role and liberalisation-driven growth specifically identify the automobile industry.
b) The location list (III) is inaccurate, and 'employment generation' (IV) is too generic to pin down this industry.

Answer: (b) (III), (II), (IV) and (I)

Explanation:
1. Fibre is produced first (III), then spun into yarn (II), then knitted into fabric (IV), and finally dyed (I).

Teacher's Note:
a) Textile process order: fibre → spinning → knitting → dyeing.
b) Each step builds on the product of the previous one.

Answer: (d) Caustic Soda

Explanation:
1. Caustic soda is an inorganic chemical product, while pharmaceuticals, synthetic rubber and dyes are mainly organic (petrochemical-based) products.

Teacher's Note:
a) Caustic soda is a classic inorganic chemical product.
b) Pharmaceuticals, synthetic rubber and dyes are instead organic/petrochemical products.

Answer: (c) Water from industries must be stored in containers, treated and cooled before being recycled for factory use

Explanation:
1. Treating, cooling and recycling industrial wastewater directly addresses water pollution from industrial discharge.

Teacher's Note:
a) Treating and recycling wastewater directly prevents water pollution.
b) The other options instead address noise, land and solid-waste pollution.

Answer: (b) Odisha

Explanation:
1. Odisha, home to the Paradeep fertiliser complex, is a significant fertiliser industry location.

Teacher's Note:
a) Odisha (Paradeep) hosts a major fertiliser industry hub.
b) This parallels Lucknow's role for the automobile industry.

Answer: (c) Potash

Explanation:
1. Potash is entirely imported, as India has no domestic potash reserves.

Teacher's Note:
a) India has no domestic potash deposits, so it must import all of it.
b) This differs from phosphate and nitrogenous fertilisers, which India partly produces domestically.

Answer: (a) (I), (III) and (IV)

Explanation:
1. NTPC is indeed a major power provider (I), has a plant at Ramagundam (IV), and enforces ecological monitoring at its power stations (III); it is not a major cause of air pollution, since it actively works to prevent it (making II false).

Teacher's Note:
a) NTPC actively monitors and manages pollution at its plants, rather than being a major polluter.
b) Statements I, III and IV are correct; II incorrectly blames NTPC for pollution.

Answer: (b) Aluminium Smelting

Explanation:
1. Aluminium smelting is the second most important metallurgical industry in India, after iron and steel.

Teacher's Note:
a) Aluminium smelting ranks second among metallurgical industries, after iron and steel.
b) Chemical, textile and fertiliser industries are not classified as metallurgical industries.

Answer: (c) Cotton

Explanation:
1. Adhesives, dyes and synthetic rubber are all petrochemical products, while cotton is a natural agricultural fibre, making cotton the odd one out.

Teacher's Note:
a) Adhesives, dyes and synthetic rubber are petrochemical products.
b) Cotton, by contrast, is a natural agricultural fibre, unrelated to petrochemicals.

Answer: (c) (A)-(II), (B)-(I), (C)-(IV), (D)-(III)

Explanation:
1. A major textile mill is in Mumbai, Maharashtra (II); the Electronics Park is in Hyderabad, Telangana (I); a chemical industry hub exists in Kerala (IV); and a major aluminium industry (NALCO) is in Odisha (III).

Teacher's Note:
a) Textile mill = Mumbai; Electronics Park = Hyderabad.
b) Chemical industry = Kerala; Aluminium industry (NALCO) = Odisha.

Answer: (a) Both (A) and (R) are true and (R) is the correct explanation of (A)

Explanation:
1. Organic chemical plants are indeed located near refineries, and this is correctly explained by the difficulty and impracticality of transporting petrochemical feedstock over long distances.

Teacher's Note:
a) Petrochemical feedstock is hard to transport far, so plants locate near refineries.
b) Both statements are true, and R correctly explains why A holds.