9th Chemistry Glossary Chemistry Terminologies mcqs test

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

Base

None of them

Base Unit

Beta particles

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

Solute

Solution

Solvent

None of them

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

None of them

Suplimation

Solution

Sublimation

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

None of them

Free State

Plane State

Ground State

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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

Gamma rays

None of them

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

Alpha particles

Alloy

Amorphous Solids

None of them

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

Atmosphere

Anode

None of them

Anion

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9. ............. Group IIA Elements.

Allotrope

Alkaline Earths

Alkali Metals

None of them

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

Calorie

None of them

Buffer

Catalyst

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11. ............the outer most shell of electrons .

None of them

Vander shell

Valance shell

Vapour shell

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

None of them

Atomic Mass Unit

Atomic Mass Number

Atomic Number

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

Atom

Matter

Atomic Mass

None of them

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

Aufbau principale

Amphoteric substance

Base

None of them

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

Electronegativity

Electron affinity

Electron

None of them

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16. An organic compound containing the CHO group

Amalgam

Element

Aldehyde

None of them

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

Concentration

Compound

None of them

Covelant bond

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

Dissociation

Double bond

Distillation

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

Electrode

Electrolysis

Electrolyte

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

Anode

Acid

Alkali

None of them

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