9th Chemistry Glossary Chemistry Terminologies mcqs test

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1. .............. Solids that have indistinct Shapes , because their particle arrangements lack order.

Amorphous Solids

Alpha particles

None of them

Alloy

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2. ........... One of the set of seven units on which the SI system is based.

Base

Base Unit

None of them

Beta particles

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3. ............. A substance which can accept a proton , H from an acid

Aufbau principale

Amphoteric substance

None of them

Base

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4. .........a pure substance that consists of two or more elements chemically combined in fixed proportions .

Concentration

Covelant bond

Compound

None of them

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5. .............the Branch of analytical chemistry that involves identifying , Elements, compounds and ions in samples of unknown or uncertain

Quantative analysis

None of them

Qualitative analysis

Quantum analysis

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6. .......,...see Daniel cell.

Galvanic Cell

Free Cell

None of them

Gamma rays

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7. .......... The Process in which a bigger molecule breaks into two or more simoler Units.

None of them

Electrolyte

Electrolysis

Electrode

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8. ............ The Smallest particle of an element which can take part in chemical reactions and display the chemical properties of that element.

Atomic Mass

Atom

Matter

None of them

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9. .......... The Process in which a bigger molecule breaks into two or more simoler Units.

Double bond

Dissociation

Distillation

None of them

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10. .............the energy liberated when an element acquires an electron to form an anion.

Electron affinity

None of them

Electron

Electronegativity

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11. An organic compound containing the CHO group

Amalgam

Element

Aldehyde

None of them

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12. .........a phase change wher by a solid passes directly into the gas phase without melting.

None of them

Solution

Suplimation

Sublimation

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13. .........the substance dissolved in a solvent to form a Solution ,its quantity in the solution is always laser.

Solution

None of them

Solvent

Solute

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14. ............. The atomic Number of an element is the number of protons in its nucleus.

None of them

Atomic Mass Unit

Atomic Number

Atomic Mass Number

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15. ........... In an electrochemical cell or electrolytic cell, the anode is the electrode where oxidation takes place.

Anode

Atmosphere

Anion

None of them

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16. ............the outer most shell of electrons .

Valance shell

None of them

Vapour shell

Vander shell

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17. ...............Water soluble hydroxide of one of the alkali metals.

None of them

Acid

Anode

Alkali

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18. ........the State of an atom where all electrons have the minimum energy .

None of them

Ground State

Plane State

Free State

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19. .......... A substance that resists changes in pH when moderate amounts of Acid or base are added.

Calorie

Buffer

None of them

Catalyst

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20. ............. Group IIA Elements.

Alkali Metals

Allotrope

None of them

Alkaline Earths

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