9th Chemistry Glossary Chemistry Terminologies mcqs test

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

Anode

Alkali

Acid

None of them

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

Free State

None of them

Ground State

Plane State

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

Solution

Suplimation

None of them

Sublimation

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

None of them

Alloy

Alpha particles

Amorphous Solids

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5. .......... 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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6. ............. Group IIA Elements.

Alkaline Earths

None of them

Alkali Metals

Allotrope

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

Beta particles

Base Unit

None of them

Base

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8. ............the outer most shell of electrons .

Vander shell

None of them

Vapour shell

Valance shell

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

Solution

Solvent

None of them

Solute

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10. An organic compound containing the CHO group

None of them

Aldehyde

Element

Amalgam

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

Atomic Mass

None of them

Matter

Atom

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

Dissociation

Double bond

None of them

Distillation

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

Electronegativity

Electron affinity

None of them

Electron

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

Atmosphere

Anode

Anion

None of them

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

None of them

Covelant bond

Compound

Concentration

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

None of them

Amphoteric substance

Base

Aufbau principale

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17. .......,...see Daniel cell.

Free Cell

Galvanic Cell

Gamma rays

None of them

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

Quantum analysis

Quantative analysis

Qualitative analysis

None of them

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

None of them

Electrolyte

Electrode

Electrolysis

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

Atomic Mass Number

Atomic Mass Unit

None of them

Atomic Number

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