Identify the soil which ranges from red to brown in colour and saline in nature:
(a) Red soil
(b) Laterite soil
(c) Arid soil
(d) Alluvial soil
1 Answers
A fertile agricultural soil appears dark coloured at the surface as compared to soil one metre down. The reason for colour of top soil is
Correct Answer - B Dark colour of soil is due to accumulation of leached organic substances and organic matter which serves as a reservoir of nutrients and water in the soil,...
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Give appropriate reasons for each of the following : (a)Addition of `Cl_2` to Kl solution gives a brown colour but excess of `Cl_2` turns it colourles
(a)`Cl_2` being a stronger oxidising agent than `I_2`, first oxidises KI to `l_2` which imparts brown colour to the solution.But when `Cl_2` is passed in excess , the `I_2` so...
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Assertion (A) : A raw mango placed in a saline solution loses water and shrivel into pickle.
Option : (C) A is true but R is false. When a raw mango is placed in a salin C solution to prepare pickle then mango loose water due to osmosis...
2 Answers 2 views
Ina certain town, 40% of the people have brown hair, 25% have brown eyes, and 15% have both brown hair and brown eyes. If a person selected at random
Correct Answer - B We have, `P(A)=40/100,P(B)=25/100and P(AnnB)=15/100` So, `P((B)/(A))=(P(AnnB))/(P(A))=(15//100)/(40//100)=3/8`
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Tropical desert or arid type climate is observed in-
(a) Philippines
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Differentiate between red algae and brown algae.
1. Photosynthetic pigments are chlorophyll-a, chlorophyll-d and phycoerythrin. Photosynthetic pigments are chlorophyll – a, chlorophyll-c and fucoxanthin. 2. Reserve food is Floridean starch. Reserve food is mannitol and laminarin. e.g. Porphyra, Gracilaria,...
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There are two boxes, red and white in colour. The ratio of the number of chocolates in the white box to the number of biscuits in the red box is ` 3 :
Correct Answer - ` 18 : 13`
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……. % of total water on the earth is saline ocean water.
97.25% of total water on the earth is saline ocean water.
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The nature of substance that converts blue litmus to red, but no change of colour with red litmus is
Correct option is C) Acid
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The Government of India abolished the privy purse arid titles of princely families in the year …………
Correct option is D) 1971
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