Classify the following into friendly and harmful microorganisms.
Yeast, malarial parasite, Lactobacillus, bread mould, Rhizobium, Bacillus anthracis
| Friendly | Harmful |
| ________ | ________ |
| ________ | ________ |
| ________ | ________ |
| ________ | ________ |
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Classify the following into double displacement, and decomposition reactions :-
(i) Decomposition reaction (ii) Double decomposition reaction
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(a) Give two differences between soap and detergent. (b) Classify the following into artificial sweeteners,
(a) Soap Detergents (1) These are sodium or Potassium salts of stearic acid These are derivatives of sulphonic acid and long chain hydrocarbons (2) Do not give foams with hard water Give foams with hard water (b) Artificial sweetner → sucralose Preservative → salt of sorbic...
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Recently , “oil zapper” was in the news. What is it ? (a) It is an eco-friendly technology for the remediation of oily sludge and oil spills
(a) The oil zapper feeds on hydrocarbon compounds present in crude oil and oily sludge (a hazardous hydrocarbon waste generated by oil refineries) and converts them into harmless CO2 and...
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Giving reasons, classify the following into intermediate and final goods. (i) Machines purchased by a dealer of machines.
(i) Machine purchased by a dealer of machines is a intermediate goods because it is meant for resale to someone. (ii) A car purchased by a household is a final...
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Giving reasons, classify the following into intermediate products and final products. (i) Furniture purchased by a school.
(i) furniture purchased by school - Final Product. Reason: School buy furniture for long - term use and it is considered as an investment. (ii) Chalks, Dusters, etc., purchased by...
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Giving reasons, classify the following into intermediate products and final products: (i) Computers installed in an office.
(i) Computers installed in an office: Final Product Reason: Office buy computers as long term durable products and are investment for them. (ii) Mobile sets Purchased by a Mobile Dealer-...
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Which two of the four kings listed below were on friendly term equally with Vardhamana Mahavir and Gautama Buddha?
The Right option is :(c) 1 and 4
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Do you know what a ‘bearhug’ is? It’s a friendly and strong hug — such as bears are thought to give, as they attack you! Again,
A ‘bearhug’ is the bear’s tight embrace. Hyenas never laugh. But their faces look like that. Crocodiles do not weep but tears come when they swallow their victims.
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Classify the following terms into cells, tissues and organs and write in the tabular column given below.
Cell Tissue Organ RBC Blood Blood vessels WBC Muscle Heart Nerve cell Nerve Hand Brain
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Why was the crofter so talkative and friendly with the peddler?
The crofter was a lonely fellow who lived on his own in a little gray cottage by the roadside. He had no wife or children, and craved company and friends....
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