The property of an element to exist in two or more physical forms with same chemical properties but different physical properties is called
A) catenation
B) isomerism
C) allotropy
D) conjugation
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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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Physical and chemical properties
i. Physical properties : These are properties which can be measured or observed without changing the identity or the composition of the substance. e.g. Colour, odour, melting point, boiling point, density, etc. ii. Chemical...
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……………. defined an element as any substance that cannot be decomposed into further simple substance by physical or chemical change.
B) Robert Boyle
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According to this every 8th element has similar properties starting from a, given element
B) Newlands’ law
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An element “X forms an ionic compound with another element Y. Then the charge on the ion formed by X is ……………..
Correct option is A) +1
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The phenomenon of possessing same molecular formula but different properties by compounds in known as ……..
C) Isomerism
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Element is a basic form of matter that cannot be broken down into simple forms by chemical reactions.
Correct option is D) Compound
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The atoms of same element which have same numbers of protons, but have different number of neutrons are called ………………….
Correct option is B) Isotopes
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Organs having same anatomical structure but differ in their function are called homologous organs. Organs having different
Answer is (C) 1 and 2
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According to Mendeleev’s periodic law, the physical and chemical properties of elements are the periodic function of their …………..
Correct option is: (A) atomic weights According to Mendeleev's periodic law, the Physical and Chemical properties of elements are the periodic function of their atomic weight
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