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Chemistry

Chemistry
The pH of human blood is between :

6.5-7
44052
4.5-5
7.5-8

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Chemistry
Nylon threads are made of

Polysaccharide
Polyamide polymer
Polyester polymer
Polyvinyl polymer

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Chemistry
Exposure to mixtures of chemicals are greater than expected on the basis of effects of exposure to each chemical individually. This is known as

Independent
Synergism
Additives
Antagonism

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Chemistry
Identify the metal which is non toxic in nature.

Gold
Cobalt
Cadmium
Chromium

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Chemistry
Match the sourc in Column B with the product of Column A. (Product) Column B (Source)A. Formic acid1. LemonB. Citric acid 2. TamarindC. Tartaric acid3. Ants

A B C 2 3 1
A B C3 2 1
A B C 3 1 2
A B C 2 1 3

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Chemistry
The most extensive, commercially useful source of thorium as monazite sand occurs in India at

Gujarat coast
Orissa coast
West Bengal coast
Travancore coast

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