Kinematics 9th Class Physics Chapter 2 Exercise Short Questions with Answers Q 2.2 : Explain translatory motion and give examples of various types of translatory motion . Translatory Motion : ” The motion in which a body moves along a line (straight or curved ) without any rotation , is called translatory motion .” Types …
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Physical Quantities and Measurements 9th Class Physics Chapter 1 Exercise Short Questions with Answers Q#1.2 : What is difference between base quantities and derived quantities . Give three examples in each case . Q#1.3 : Pick out the base units in the following : joule , newton , kilogramme , hertz , mole , ampere …
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Electrochemistry 9th chemistry chapter 7 solved exercise MCQs Spontaneous chemical reactions take place in : (a) Electrolytic cell (b) Galvanic cell ✔ (c) Nelson’s cell (d) Downs cell 2. Formation of water from hydrogen and oxygen is : (a) Redox reaction ✔ (b) Acid-base reaction (c) Neutralization (d) Decomposition 3. Which one of the following …
Electrochemistry 9th chemistry chapter 7 solved exercise short questions Q#1 : Define oxidation in terms of electrons . Give an example . Oxidation : ” Oxidation is the loss of electrons by an atom or an ion “ Example : Q#2 : Define reduction in terms of loss or gain of oxygen or hydrogen . …
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Solutions 9th Chemistry Chapter 6 solved exercise MCQs Mist (دھند) is an example of solution : (a) liquid in gas 🗸 (b) gas in liquid (c) solid in gas (d) gas in solid 2. Which one of the following is a ‘ liquid in solid ‘ solution ? (a) sugar in water (b) butter 🗸 …
9th Chemistry Chapter 5 solved exercise MCQs Physical States of Matter How many times are the liquids denser than gases ? (a) 100 times (b) 1000 times ✔ (c) 10,000 times (d) 100,000 times 2. Gases are the lightest form of matter and their densities are expressed in terms of : (a) mg/cm3 (b) g/cm3 …
Structure of Molecule 9th chemistry chapter 4 solved exercise MCQs Atoms react with each other because : (a) they are attracted to each other (b) they are short of electrons (c) they want to attain stability ✔ (d) they want to disperse 2. An atom having six electrons in its valence shell will achieve noble …
Periodic Table and Periodicity of Properties 9th chemistry chapter 3 solved exercise MCQs The atomic radii of elements in Periodic Table : (a) increase from left to right in a period (b) increase from top to bottom in a group ✔ (c) do not change from left to right in a period (d) decrease from …
Structure of Molecule 9th chemistry chapter 3 solved exercise short questions Q#1 : Why do atoms react ? Atoms react to attain stability . Atoms attain stable electronic configuration by following ways : By losing electrons By gaining electrons By mutual sharing of electrons Q#2 : Why is the bond between an electropositive and electronegative …
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Periodic Table and Periodicity of Properties 9th chemistry chapter 3 solved exercise short questions Q#1 : Why noble gases are not-reactive ? Reason: Because their valence shells are completely filled and do not tend to lose or gain electrons from any other atom. Therefore, they are not reactive . Q#2 : Why Cesium (at.no.55) requires …
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