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Chemistry

Chemistry
Which among the following is found in chlorophyll ?

Fe2+
Mg2+
Ca2+
A l3+

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Chemistry
Supersonic jet causes pollution by thinning of

SO2 layer
CO2 layer
O3 layer
O 2 layer

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Chemistry
Physico-chemical characteristics of water in water sources undergo changes due to

Aquatic macrophytes
Effluents
Auatic fungi
Evapotranspiration

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Chemistry
Mercury is a :

Liquid non-metal
Liquid metal
Solid metal
Solid non-metal

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Chemistry
A thick paste of cement, sand and water is called

Kiln
R.C.C.
Concrete
Mortar

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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

Additives
Independent
Antagonism
Synergism

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MORE MCQ ON Chemistry

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