Substances which can be separated into two or more components by chemical reactions are called as ……………….
A) elements
B) mixtures
C) compounds
D) none of these
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10. Lymph differs from blood in possessing (1) More proteins and less waste products (2) Less proteins and more waste products (3) More proteins and more waste products (4) Less proteins and less waste products
(2) Less proteins and more waste products
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Fill in the blanks : (ii)Many enzymes contain cetain ___ substances associated with them. There substances are called ____
Correct Answer - non-protein , cofactors
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A/an is a simple combination of two or more substances in which the constituent substances retain their separate identities.
(B) mixture The mixture show, the properties of its constituent substance while the compounds show different properties to its constituent (substance).
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A/an is a simple combination of two or more substances in which the constituent substances retain their separate identities.
2 Answers
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Waste substances that can be degraded by microbes into harmless and non-toxic substances are
C) biodegradable waste
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The basic form of matter that cannot be broken down into simpler substances in chemical reactions is ………………
Correct option is B) compound
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Assertion (A) : Air is compound substance. Reason (R) : We can separate air into two or more components only by means of a chemical reaction.
B) A and R are false
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Components of blood sample are separated by …………..
D) Centrifugation
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Chemical reactions which occur in presence of sunlight are called ………………. reactions. A) Thermal
C) Photo chemical
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These substances are required to prove that the speed of diffusion is different for different substances.
C) Long glass tube, cotton, HCl, NH3
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