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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.
| 6051. |
How to make out whether an element is similar to another In modern periodic? |
| Answer» How to make out whether an element is similar to another In modern periodic? | |
| 6052. |
Which of the following ores cannot be concentrated by electromagnetic separation? |
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Answer» Which of the following ores cannot be concentrated by electromagnetic separation? |
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| 6053. |
10 Which one of the following will not form a yellow ppt on heating with an alkaline solution of iodine? 1) CH3CH(OH)CH3 2) CH3CHCH(OH)CH3 3) CH3OH 4) CH3CH2OH |
| Answer» 10 Which one of the following will not form a yellow ppt on heating with an alkaline solution of iodine? 1) CH3CH(OH)CH3 2) CH3CHCH(OH)CH3 3) CH3OH 4) CH3CH2OH | |
| 6054. |
6. Compound soluble in water and why A mercurous nitrate B mercuric nitrate C mercurous chloride D mercurious perclorate |
| Answer» 6. Compound soluble in water and why A mercurous nitrate B mercuric nitrate C mercurous chloride D mercurious perclorate | |
| 6055. |
Who prepared urea for the first time by heating ammonium cynate? |
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Answer» Who prepared urea for the first time by heating ammonium cynate? |
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| 6056. |
Question 7 Which of the following solutions will not make the bulb in Fig glow? (a) Sodium chlorides (b) Copper sulphate (c) Silver nitrate (d) Sugar solution in diluted water |
Answer» Question 7 Which of the following solutions will not make the bulb in Fig glow? (a) Sodium chlorides (b) Copper sulphate (c) Silver nitrate (d) Sugar solution in diluted water |
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| 6057. |
How can we stop corrosion in a frying pan? |
| Answer» How can we stop corrosion in a frying pan? | |
| 6058. |
How many unpaired electrons are there in Ni2+? |
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Answer» How many unpaired electrons are there in Ni2+? |
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| 6059. |
why does a current carrying loop behave as a dipole? |
| Answer» why does a current carrying loop behave as a dipole? | |
| 6060. |
Explain the apparent random wavering or flickering of objects when seen through a turbulent stream of hot air rising above a fire or radiator. |
| Answer» Explain the apparent random wavering or flickering of objects when seen through a turbulent stream of hot air rising above a fire or radiator. | |
| 6061. |
Calcium carbonate reacts with nitric acid to give salt, gas X and water. What is X? |
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Answer» Calcium carbonate reacts with nitric acid to give salt, gas X and water. What is X? |
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| 6062. |
propyne+kmno4+h2so4 gives product A which on reaction with NaOH+CaO Gives compound B.identify the compounds |
| Answer» propyne+kmno4+h2so4 gives product A which on reaction with NaOH+CaO Gives compound B.identify the compounds | |
| 6063. |
Equal volume of n2 and H2 react to form ammonia under suitable condition then the limiting reagent is |
| Answer» Equal volume of n2 and H2 react to form ammonia under suitable condition then the limiting reagent is | |
| 6064. |
What would you observe in the following case:Sugar crystals are added to hard glass test tube containing concentrated sulphuric acid. |
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Answer» What would you observe in the following case: |
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| 6065. |
0.7 g of iron reacts directly with 0.4 g of sulphur to form ferrous sulphide. If 2.8 g of iron dissolves in dilute HCl and excess of sodium sulphide solution is added, 4.4 g of iron sulphide is precipitated. If it obeys the law of constant composition, what is the ratio of weights of Fe : S ? |
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Answer» 0.7 g of iron reacts directly with 0.4 g of sulphur to form ferrous sulphide. If 2.8 g of iron dissolves in dilute HCl and excess of sodium sulphide solution is added, 4.4 g of iron sulphide is precipitated. If it obeys the law of constant composition, what is the ratio of weights of Fe : S ? |
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| 6066. |
Question 29The first member of alkyne homologous series is(a) ethyne(b) ethene(c) propyne(d) methane |
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Answer» Question 29 The first member of alkyne homologous series is (a) ethyne (b) ethene (c) propyne (d) methane |
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| 6067. |
Identify the correct Lewis dot structure of O2 molecule. |
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Answer» Identify the correct Lewis dot structure of O2 molecule. |
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| 6068. |
What is electrolysis? |
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Answer» What is electrolysis? |
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| 6069. |
The temperature of one mole of an ideal gas varies with its volume as T = -aV³+bV² where a and b are positive constants. The maximum pressure of gas during this process is |
| Answer» The temperature of one mole of an ideal gas varies with its volume as T = -aV³+bV² where a and b are positive constants. The maximum pressure of gas during this process is | |
| 6070. |
Which period of the modern periodic table contains maximum elements? |
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Answer» Which period of the modern periodic table contains maximum elements? |
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| 6071. |
In order to study the neutralisation reaction of acid and base, a student took 10 mL of dilute hydrochloric acid in a conical flask and added a few drops of phenolphthalein indicator to it. He then added dilute sodium hydroxide solution to the conical flask dropwise with a dropper while shaking the conical flask constantly. When the acid is completely neutralised by the base, the solution in conical flask will turn :(1) slightly red(2) slightly yellow(3) colourless(4) slightly pink |
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Answer» In order to study the neutralisation reaction of acid and base, a student took 10 mL of dilute hydrochloric acid in a conical flask and added a few drops of phenolphthalein indicator to it. He then added dilute sodium hydroxide solution to the conical flask dropwise with a dropper while shaking the conical flask constantly. When the acid is completely neutralised by the base, the solution in conical flask will turn : (1) slightly red (2) slightly yellow (3) colourless (4) slightly pink |
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| 6072. |
With respect to the notation for cell representation, which one of the following statements is correct? |
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Answer» With respect to the notation for cell representation, which one of the following statements is correct? |
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| 6073. |
Question 2What kind of metals do not corrode easily? |
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Answer» Question 2 What kind of metals do not corrode easily? |
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| 6074. |
What are the features of Ellingham diagram? What is its significance? |
| Answer» What are the features of Ellingham diagram? What is its significance? | |
| 6075. |
(a) Name an element which reacts with hydrogen to form a compound which is strongly acidic in water. (b) Explain why dilute hydrochloric acid cannot be concentrated by boiling beyond 22.2%. [4 MARKS] |
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Answer» (a) Name an element which reacts with hydrogen to form a compound which is strongly acidic in water. (b) Explain why dilute hydrochloric acid cannot be concentrated by boiling beyond 22.2%. [4 MARKS] |
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| 6076. |
Only a very dilute solution of hydrogen chloride in water can be concentrated by boiling the solution while a very concentrated solution would become less concentrated when boiled explain why? |
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Answer» Only a very dilute solution of hydrogen chloride in water can be concentrated by boiling the solution while a very concentrated solution would become less concentrated when boiled explain why? |
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| 6077. |
When excess of ethanol is heated with conc. H2SO4 at 413K, it undergoes ___. |
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Answer» When excess of ethanol is heated with conc. H2SO4 at 413K, it undergoes ___. |
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| 6078. |
The elements or compounds, which occur naturally in the earth's crust, are known as __________. |
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Answer» The elements or compounds, which occur naturally in the earth's crust, are known as __________. |
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| 6079. |
A student was given two test-tubes A and B each containing a colourless solution. When a few drops of universal indicator were added to the two test-tubes, one by one, then the colour of solution in test-tube A changed to blue whereas the colour of solution in test-tube B changed to orange.(a) Which test-tube has a solution of pH higher than 7?(b) Which test-tube has a solution of pH lower than 7?(c) Which test-tube has an acidic solution?(d) Which test-tube has an alkaline solution? |
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Answer» A student was given two test-tubes A and B each containing a colourless solution. When a few drops of universal indicator were added to the two test-tubes, one by one, then the colour of solution in test-tube A changed to blue whereas the colour of solution in test-tube B changed to orange. (a) Which test-tube has a solution of pH higher than 7? (b) Which test-tube has a solution of pH lower than 7? (c) Which test-tube has an acidic solution? (d) Which test-tube has an alkaline solution? |
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| 6080. |
If ionic compounds aren't able to conduct electricity in solid form because the ions aren't free, then how are other solids able to conduct? |
| Answer» If ionic compounds aren't able to conduct electricity in solid form because the ions aren't free, then how are other solids able to conduct? | |
| 6081. |
Use of ether.. |
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Answer» Use of ether.. |
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| 6082. |
12 Give the conformers of cyclohexane. |
| Answer» 12 Give the conformers of cyclohexane. | |
| 6083. |
Equal volumes of N2 and H2 react to form ammonia under suitable conditions then the limiting reagent is? |
| Answer» Equal volumes of N2 and H2 react to form ammonia under suitable conditions then the limiting reagent is? | |
| 6084. |
The number of atoms in 0.1 mol of a triatomic gasis (NA-6.02 x 1023 mol-1) \lbrack AIPMT (Prelims)-2010)(1) 6.026 x 1022(3) 3.600 x 1023(2) 1.806 x 1023(4) 1.800 x 1022 |
| Answer» The number of atoms in 0.1 mol of a triatomic gasis (NA-6.02 x 1023 mol-1) \lbrack AIPMT (Prelims)-2010)(1) 6.026 x 1022(3) 3.600 x 1023(2) 1.806 x 1023(4) 1.800 x 1022 | |
| 6085. |
Hydrocarbons are organic compounds containing _______and hydrogen as their main components. |
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Answer» Hydrocarbons are organic compounds containing _______and hydrogen as their main components. |
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| 6086. |
In Ethane C2H6 each carbon atom is bonded to ___ hydrogen atoms. |
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Answer» In Ethane C2H6 each carbon atom is bonded to |
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| 6087. |
A substance which has very low ignition temperature and can easily catch fire with a flame is called _________. |
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Answer» A substance which has very low ignition temperature and can easily catch fire with a flame is called _________. |
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| 6088. |
Identify the elements whose bonding was explained by Davy's experiment. |
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Answer» Identify the elements whose bonding was explained by Davy's experiment. |
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| 6089. |
The correct order of thermal stability of alkaline earth metals carbonates is: |
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Answer» The correct order of thermal stability of alkaline earth metals carbonates is: |
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| 6090. |
Complete : (a) Vinegar is prepared by the bacterial oxidation of ....... . (b) The organic acid present in vinegar is .... . (c) The next higher homologue of ethanoic acid is ..... . |
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Answer» Complete : |
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| 6091. |
11. What is exothermic and endothermic reaction? |
| Answer» 11. What is exothermic and endothermic reaction? | |
| 6092. |
An important ore of magnesium is |
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Answer» An important ore of magnesium is |
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| 6093. |
how to detect whether the compound will form dimer or not |
| Answer» how to detect whether the compound will form dimer or not | |
| 6094. |
How many oxides are formed by nitrogen? |
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Answer» How many oxides are formed by nitrogen? |
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| 6095. |
limitations of mendeleev periodic tabl |
| Answer» limitations of mendeleev periodic tabl | |
| 6096. |
Question 10Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid HCl is added to test tube A, while acetic acid (CH3COOH) is added to test tube B. In which test tube will the fizzing occur more vigorously and why? |
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Answer» Question 10 Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid HCl is added to test tube A, while acetic acid (CH3COOH) is added to test tube B. In which test tube will the fizzing occur more vigorously and why? |
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| 6097. |
Some organic compounds are given. Identify carboxylic acid from the following. |
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Answer» Some organic compounds are given. Identify carboxylic acid from the following. |
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| 6098. |
35. What is the number of moles of O-atom in 126g any of HNO_3 ? And:6xNa IE 6/avagadro's no. |
| Answer» 35. What is the number of moles of O-atom in 126g any of HNO_3 ? And:6xNa IE 6/avagadro's no. | |
| 6099. |
Name the functional group of organic compounds that can be hydrogenated. With the help of suitable example, explain the process of hydrogenation mentioning the conditions of the reaction and any one change in physical property with the formation of the product. Name any one natural source of organic compounds that are hydrogenated. |
| Answer» Name the functional group of organic compounds that can be hydrogenated. With the help of suitable example, explain the process of hydrogenation mentioning the conditions of the reaction and any one change in physical property with the formation of the product. Name any one natural source of organic compounds that are hydrogenated. | |
| 6100. |
Give equations for the following conversions:(i) Sodium to sodium hydroxide using water.(ii) Steam to hydrogen using burning magnesium.(iii) Dilute sulphuric acid to hydrogen using zinc.(iv) Mercuric oxide to mercury.(v) Silver oxide to silver.(vi) Copper hydroxide to copper oxide.(vii) Calcium hydroxide to calcium oxide.(viii) Lead carbonate to lead.(ix) Potassium nitrate to oxygen.(x) Copper nitrate to nitrogen dioxide.(xi) Mercuric nitrate to mercury.(xii) Silver nitrate to silver. |
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Answer» Give equations for the following conversions: (i) Sodium to sodium hydroxide using water. (ii) Steam to hydrogen using burning magnesium. (iii) Dilute sulphuric acid to hydrogen using zinc. (iv) Mercuric oxide to mercury. (v) Silver oxide to silver. (vi) Copper hydroxide to copper oxide. (vii) Calcium hydroxide to calcium oxide. (viii) Lead carbonate to lead. (ix) Potassium nitrate to oxygen. (x) Copper nitrate to nitrogen dioxide. (xi) Mercuric nitrate to mercury. (xii) Silver nitrate to silver. |
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