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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 6151. |
(a) What is the volume occupied by the following gases at STP?(i) 48 g of oxygen.(ii) 16 g of sulphur dioxide(b) Determine the molecular mass of a gas if 5 g of it occupies a volume of 4 litres at STP. |
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Answer» (a) What is the volume occupied by the following gases at STP? (i) 48 g of oxygen. (ii) 16 g of sulphur dioxide (b) Determine the molecular mass of a gas if 5 g of it occupies a volume of 4 litres at STP. |
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| 6152. |
What is the variation of A) Conductance B) Conductivity C) Molar conductivity D) Equivalent Conductivity. With concentration . |
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Answer» What is the variation of A) Conductance B) Conductivity C) Molar conductivity D) Equivalent Conductivity. With concentration . |
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| 6153. |
In the laboratory preparation of nitric acid, it can be obtained below 200∘C or above 200∘C, but the lower temperature is preferred. Which of the following reason(s) is /are correct? |
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Answer» In the laboratory preparation of nitric acid, it can be obtained below 200∘C or above 200∘C, but the lower temperature is preferred. Which of the following reason(s) is /are correct?
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| 6154. |
Identify the substance that is oxidised and the substances that are reduced in the following reactions:1.MnO2 + 4HCl→MnCl2+ 2H2O+Cl22. 4Na + O2→2Na2O 3. ZnO+C→Zn+CO |
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Answer» Identify the substance that is oxidised and the substances that are reduced in the following reactions: 1.MnO2 + 4HCl→MnCl2+ 2H2O+Cl22. 4Na + O2→2Na2O 3. ZnO+C→Zn+CO |
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| 6155. |
55. In a discharge tube there are only two hydrogen atoms if the electrons in both atoms are de-exciting from fourth Orbit the minimum and maximum number of spectral lines should be |
| Answer» 55. In a discharge tube there are only two hydrogen atoms if the electrons in both atoms are de-exciting from fourth Orbit the minimum and maximum number of spectral lines should be | |
| 6156. |
Equivalent mass of crystalline oxalic acid in complete neutralization process is? Why not 45 and 63 .? When will it be 45? |
| Answer» Equivalent mass of crystalline oxalic acid in complete neutralization process is? Why not 45 and 63 .? When will it be 45? | |
| 6157. |
Composition of the nuclei of two atomic species A and B is given as under: A B Protons: 18 20 Neutrons: 22 20 Give the mass numbers of A and B. What is the relation between the two species and which element or elements they represent? |
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Answer» Composition of the nuclei of two atomic species A and B is given as under:
Give the mass numbers of A and B. What is the relation between the two species and which element or elements they represent?
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| 6158. |
30. What atomic number of an element X would have to become so that the 4th orbit around X would fit inside the first Bohr orbit of H atom? |
| Answer» 30. What atomic number of an element X would have to become so that the 4th orbit around X would fit inside the first Bohr orbit of H atom? | |
| 6159. |
An isotope of __ (uranium/cobalt/iodine) is used in the treatment of cancer. |
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Answer» An isotope of |
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| 6160. |
The ionization energy of an atom is the energy: |
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Answer» The ionization energy of an atom is the energy: |
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| 6161. |
Fill in the following blanks with suitable words: (a) In water, the proportion of oxygen and hydrogen is ___ by mass. (b) In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ___ |
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Answer» Fill in the following blanks with suitable words: (a) In water, the proportion of oxygen and hydrogen is (b) In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called |
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| 6162. |
What is the difference between O2 and 2O |
| Answer» What is the difference between O2 and 2O | |
| 6163. |
Which gas is/are responsible for Global warming? |
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Answer» Which gas is/are responsible for Global warming? |
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| 6164. |
For any substance why does the temperature remain constant during the change of state? |
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Answer» For any substance why does the temperature remain constant during the change of state? |
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| 6165. |
Explain the method of centrifugation. |
| Answer» Explain the method of centrifugation. | |
| 6166. |
Classify the followings into elements, compounds and mixturesa. Sodium b. Soilc. Sugar solutiond. Silvere. Calcium carbonatef. Ting. Silicon |
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Answer» Classify the followings into elements, compounds and mixtures a. Sodium b. Soil c. Sugar solution d. Silver e. Calcium carbonate f. Tin g. Silicon |
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| 6167. |
Question 11 Which one of the following elements exhibit maximum number of valence electrons? (a) Na (b) Al (c) Si (d) P |
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Answer» Question 11 |
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| 6168. |
What are the products formed when aluminium reacts with water??? |
| Answer» What are the products formed when aluminium reacts with water??? | |
| 6169. |
The inter convention of a substances from one state of matter to another is an example ofchange?(physical /chemical) |
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Answer» The inter convention of a substances from one state of matter to another is an example ofchange?(physical /chemical) |
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| 6170. |
liquids generally have lower density than solid but the ice floats in water why |
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Answer» liquids generally have lower density than solid but the ice floats in water why |
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| 6171. |
What is the difference between concentration of a solution and solubility? |
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Answer» What is the difference between concentration of a solution and solubility? |
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| 6172. |
The mass of an electron is approximately 1/2000 times that of: |
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Answer» The mass of an electron is approximately 1/2000 times that of: |
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| 6173. |
(a) State the position of hyrogen in the periodic table. (b) Explain its resemblance to the other members of its group. |
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Answer» (a) State the position of hyrogen in the periodic table. (b) Explain its resemblance to the other members of its group. |
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| 6174. |
HNO2 acts both as reductant and oxidant, while HNO3 acts only as oxidant. It is due to their |
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Answer» HNO2 acts both as reductant and oxidant, while HNO3 acts only as oxidant. It is due to their |
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| 6175. |
From top to bottom in any group of the periodic table the electropositive character of the element___. |
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Answer» From top to bottom in any group of the periodic table the electropositive character of the element |
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| 6176. |
Which change is catgorized incorrectly? |
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Answer»
Which change is catgorized incorrectly? |
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| 6177. |
Explain how to balance chemical equations by oxidation-reduction method. |
| Answer» Explain how to balance chemical equations by oxidation-reduction method. | |
| 6178. |
The chemical used to remove organic particles from leather is ___ . |
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Answer» The chemical used to remove organic particles from leather is |
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| 6179. |
Question 44. For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake. How will it affect the taste of the cake and why ? How can baking soda be converted into baking powder ? What is the role of tartaric acid added to baking soda ? |
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Answer» Question 44. For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake.
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| 6180. |
What is intermolecular forces ? |
| Answer» What is intermolecular forces ? | |
| 6181. |
Can solids be compressed? |
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Answer» Can solids be compressed? |
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| 6182. |
Why do we rub magnesium ribbon with a cloth before heating? |
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Answer» Why do we rub magnesium ribbon with a cloth before heating? |
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| 6183. |
What is the difference between liquefaction and condensation? |
| Answer» What is the difference between liquefaction and condensation? | |
| 6184. |
Which among the given salts are used in making the freezing mixture? |
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Answer» Which among the given salts are used in making the freezing mixture? |
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| 6185. |
Molecular mass of hydrogen (H2) is___u. |
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Answer» Molecular mass of hydrogen (H2) is |
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| 6186. |
Which of the following shell is closest to nucleus? |
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Answer» Which of the following shell is closest to nucleus? |
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| 6187. |
Which of the following does not have a fixed melting point/boiling point? |
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Answer» Which of the following does not have a fixed melting point/boiling point? |
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| 6188. |
Which amongst the following is an unsaturated hydrocarbon? |
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Answer» Which amongst the following is an unsaturated hydrocarbon? |
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| 6189. |
Which of the following pair of elements represents a mole ratio of 1:1? |
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Answer» Which of the following pair of elements represents a mole ratio of 1:1? |
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| 6190. |
State one observation which shows that atom is not indivisible. |
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Answer» State one observation which shows that atom is not indivisible. |
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| 6191. |
LiAIH4 converts acetic acid into[CPMT 1977; MP PMT 1990, 92] |
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Answer» LiAIH4 converts acetic acid into[CPMT 1977; MP PMT 1990, 92] |
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| 6192. |
The raw material used in nylon-6 is |
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Answer» The raw material used in nylon-6 is |
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| 6193. |
What is valency factor of acids in a given reaction? |
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Answer» What is valency factor of acids in a given reaction? |
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| 6194. |
Mendeleev gave prefix ‘Eka’ (one) to the name of the preceding element for the undiscovered elements in the group. What do the names, Eka-aluminium and Eka-silicon represent according to Mendeleev? |
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Answer» Mendeleev gave prefix ‘Eka’ (one) to the name of the preceding element for the undiscovered elements in the group. What do the names, Eka-aluminium and Eka-silicon represent according to Mendeleev? |
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| 6195. |
Borazine can be prepared by heating: |
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Answer» Borazine can be prepared by heating: |
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| 6196. |
What is meant by Lattice energy, ionisation energy. Sir/Ma'am what is the difference between them |
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Answer» What is meant by Lattice energy, ionisation energy. Sir/Ma'am what is the difference between them |
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| 6197. |
Is it possible to determine a material is edible or not by using pH? How? |
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Answer» Is it possible to determine a material is edible or not by using pH? How? |
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| 6198. |
If 10grams of solute is dissolved in 100grams of solvent then find mass % |
| Answer» If 10grams of solute is dissolved in 100grams of solvent then find mass % | |
| 6199. |
The correct order of electron affinity is |
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Answer» The correct order of electron affinity is |
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| 6200. |
Take a mixture of iron fillings and sulphur powder in a test tube. Heat the test tube strongly till the mixture becomes red hot. Let the mixture cool and add dil. sulphuric acid to it. Which statement is true for the content of the test tube after the experiment? |
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Answer» Take a mixture of iron fillings and sulphur powder in a test tube. Heat the test tube strongly till the mixture becomes red hot. Let the mixture cool and add dil. sulphuric acid to it. Which statement is true for the content of the test tube after the experiment?
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