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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.
| 3351. |
Name the following:(1) Metal which forms an amphoteric oxide.(2) An alloy of copper and zinc.(3) A compound which is added to lower the fusion temperature of an electrolytic bath in extraction of aluminium.(4) A metal which does not react with cold water but reacts with steam.(5) A common ore of aluminium. |
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Answer» Name the following: (1) Metal which forms an amphoteric oxide. (2) An alloy of copper and zinc. (3) A compound which is added to lower the fusion temperature of an electrolytic bath in extraction of aluminium. (4) A metal which does not react with cold water but reacts with steam. (5) A common ore of aluminium. |
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| 3352. |
The chief reaction(s), occurring in blast furnace during extraction of iron from Haematite is/are: |
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Answer» The chief reaction(s), occurring in blast furnace during extraction of iron from Haematite is/are: |
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| 3353. |
Which of the following can be used for preventing corrosion? |
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Answer» Which of the following can be used for preventing corrosion? |
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| 3354. |
List three properties of sodium differ from physical properties of most metals |
| Answer» List three properties of sodium differ from physical properties of most metals | |
| 3355. |
The first ionization enthalpies for three elements are 1314, 1680, and 2080 kJ mol−1, respectively. The correct sequence of the elements is |
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Answer» The first ionization enthalpies for three elements are 1314, 1680, and 2080 kJ mol−1, respectively. The correct sequence of the elements is |
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| 3356. |
Most of the metals are electropositive, due to which they can easily form: |
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Answer» Most of the metals are electropositive, due to which they can easily form: |
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| 3357. |
22. IUPAC name of 4-isopropyl-m-xylene is: |
| Answer» 22. IUPAC name of 4-isopropyl-m-xylene is: | |
| 3358. |
Find the ratio of radii of two nuclei with mass number 8 and 64. Also find the ratio of their densities. |
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Answer» Find the ratio of radii of two nuclei with mass number 8 and 64. Also find the ratio of their densities. |
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| 3359. |
Which of the following factors does economics of extraction depends on? |
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Answer» Which of the following factors does economics of extraction depends on? |
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| 3360. |
(a) A metal M forms a volatile chloride containing 65.5% chlorine. If the density of the chloride relative to hydrogen is 162.5, find the molecular formula of the chloride.(M = 56; Cl = 35.5) |
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Answer» (a) A metal M forms a volatile chloride containing 65.5% chlorine. If the density of the chloride relative to hydrogen is 162.5, find the molecular formula of the chloride. |
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| 3361. |
73 The activation energy of a first order reaction at 300 kelvin is 60 kilojoules per mole .in the presence of a catalyst the activation energy gets lowered to 50 kilojoules per mole at 300 Kelvin. how many times the reaction rate changes in the presence of the catalyst at the same temperature? |
| Answer» 73 The activation energy of a first order reaction at 300 kelvin is 60 kilojoules per mole .in the presence of a catalyst the activation energy gets lowered to 50 kilojoules per mole at 300 Kelvin. how many times the reaction rate changes in the presence of the catalyst at the same temperature? | |
| 3362. |
Aditya remembered that sodium shouldn’t be stored in water and so he used ethanol to store sodium. He observed sodium disappearing to give a yellow powder. What is the yellow powder? |
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Answer» Aditya remembered that sodium shouldn’t be stored in water and so he used ethanol to store sodium. He observed sodium disappearing to give a yellow powder. What is the yellow powder? |
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| 3363. |
"Downward displacement of air" is a method of |
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Answer» "Downward displacement of air" is a method of |
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| 3364. |
What is the minimum value of individual test results (in N/mm2) for compressive strength compliance requirement for concrete M20 as per codal provision? |
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Answer» What is the minimum value of individual test results (in N/mm2) for compressive strength compliance requirement for concrete M20 as per codal provision? |
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| 3365. |
What is the mass of silver deposited on the passage of 2 A current during the electrolysis of silver? Electrochemical equivalent of silver = 1.18×10−3 gm C−1 |
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Answer» What is the mass of silver deposited on the passage of 2 A current during the electrolysis of silver? |
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| 3366. |
The number of electrons in A and B are 20 and 8 respectively Find the formula of the compound made up of A an |
| Answer» The number of electrons in A and B are 20 and 8 respectively Find the formula of the compound made up of A an | |
| 3367. |
How can an aquarium be made into a self-sustaining unit like a natural ecosystem? |
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Answer» How can an aquarium be made into a self-sustaining unit like a natural ecosystem? |
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| 3368. |
19. 1,3 dibromo-propane react with zinc to give- (a)propene (b)propane (c)cyclopropane (d)hexane |
| Answer» 19. 1,3 dibromo-propane react with zinc to give- (a)propene (b)propane (c)cyclopropane (d)hexane | |
| 3369. |
The number of structural isomers of pentane is__. |
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Answer» The number of structural isomers of pentane is__. |
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| 3370. |
48.A boat having a length of 3metre and breadth 2metre is floating on a lake the boat sinks by one 1cm when a man gets on it the mass of the man is 1)60kg 2)62kg 3)72kg 4)128kg |
| Answer» 48.A boat having a length of 3metre and breadth 2metre is floating on a lake the boat sinks by one 1cm when a man gets on it the mass of the man is 1)60kg 2)62kg 3)72kg 4)128kg | |
| 3371. |
Mass of one atom of calcium is: |
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Answer» Mass of one atom of calcium is: |
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| 3372. |
Write the equation for the action of heat on:(i) ammonium chloride(ii) ammonium nitrateState, whether each reaction is an example of thermal dissociation or thermal decomposition. |
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Answer» Write the equation for the action of heat on: (i) ammonium chloride (ii) ammonium nitrate State, whether each reaction is an example of thermal dissociation or thermal decomposition. |
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| 3373. |
1) which type of medicine is used for treating indigestion caused by overeating: a)antibiotic b)analgesic c) antacid |
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Answer» 1) which type of medicine is used for treating indigestion caused by overeating: a)antibiotic b)analgesic c) antacid |
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| 3374. |
The heart of a man pumps 5 litres of blood through the arteries per minute at a pressure of 150mm of Hg.If the density of mercury is 13.6×10^3kg/m^3 $ g=10m/s^2. Then the power in watt is. |
| Answer» The heart of a man pumps 5 litres of blood through the arteries per minute at a pressure of 150mm of Hg.If the density of mercury is 13.6×10^3kg/m^3 $ g=10m/s^2. Then the power in watt is. | |
| 3375. |
Given below are the elements with their atomic masses. Identify a set of elements which is not a Dobereiner's triad. |
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Answer» Given below are the elements with their atomic masses. Identify a set of elements which is not a Dobereiner's triad. |
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| 3376. |
3. What is the third member of alkenyne family ? What is alkenyne and what is its general formula !? |
| Answer» 3. What is the third member of alkenyne family ? What is alkenyne and what is its general formula !? | |
| 3377. |
How ,many ml of 0.125 M Cr^{3+} must be racted with 12 ml of 0.2M MnO_{4,}if the redox products are Cr{O^{-2}}_7 and Mn ^{+2 |
| Answer» How ,many ml of 0.125 M Cr^{3+} must be racted with 12 ml of 0.2M MnO_{4,}if the redox products are Cr{O^{-2}}_7 and Mn ^{+2 | |
| 3378. |
Choose the nucleophile from the given ions. |
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Answer» Choose the nucleophile from the given ions. |
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| 3379. |
Question 7.1Write the balanced chemical equation for the following reaction:Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water |
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Answer» Question 7.1 Write the balanced chemical equation for the following reaction: Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water |
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| 3380. |
Two moles of an ideal gas is compressed isothermally and reversibly from a volume 2L to 0.5L at initial pressure of 1 atm . the work done by gas i |
| Answer» Two moles of an ideal gas is compressed isothermally and reversibly from a volume 2L to 0.5L at initial pressure of 1 atm . the work done by gas i | |
| 3381. |
Question 48(a) What are hydrocarbons? Give examples.(b) Give the structural difference between saturated and unsaturated hydrocarbons with two examples of each.(c) What is a functional group? Give examples of four different functional groups. |
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Answer» Question 48 |
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| 3382. |
Chlorophyll, the substance responsible for the greencolour of leaves, has one Mg atom per chlorophyllmolecule and contains 2.72% Mg by mass. What isthe molar mass of chlorophyll? |
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Answer» Chlorophyll, the substance responsible for the green colour of leaves, has one Mg atom per chlorophyll molecule and contains 2.72% Mg by mass. What is the molar mass of chlorophyll? |
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| 3383. |
In theoretical probability approach, the outcomes are |
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Answer» In theoretical probability approach, the outcomes are |
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| 3384. |
Which one of the following types of medicines is used for treating indigestion using the concept of neutralization reaction? |
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Answer» Which one of the following types of medicines is used for treating indigestion using the concept of neutralization reaction? |
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| 3385. |
If the actual observed value of standard penetration resistance, N, is greater than 15 in a fine sand layer below water table, then the equivalent penetration resistance will be |
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Answer» If the actual observed value of standard penetration resistance, N, is greater than 15 in a fine sand layer below water table, then the equivalent penetration resistance will be |
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| 3386. |
Give the IUPAC names of the compounds on the right. The IUPAC names of the compounds on the left are to guide you for giving the correct IUPAC names of the compounds on the right. [5 MARKS] |
Answer» Give the IUPAC names of the compounds on the right. The IUPAC names of the compounds on the left are to guide you for giving the correct IUPAC names of the compounds on the right. [5 MARKS]
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| 3387. |
41.The volumes of ozone and chlorine diffusing during the same time are 35mL and 29ml respectively. If the molecular weight of chlorine is 71,Calculate the molecular weight of ozone. |
| Answer» 41.The volumes of ozone and chlorine diffusing during the same time are 35mL and 29ml respectively. If the molecular weight of chlorine is 71,Calculate the molecular weight of ozone. | |
| 3388. |
(i) Arrange the following metals in an increasing order of their reactivity towards water: Zn, Fe, Mg, Na.(ii) Arrange the following in increasing order of their oxides to get reduced with carbon: Al, Na, Fe, Cu.(iii) Arrange the following metals in order of decreasing order of their chemical reactivity: Mg, Ca, Cu, Fe, Na, Zn, Pb. |
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Answer» (i) Arrange the following metals in an increasing order of their reactivity towards water: Zn, Fe, Mg, Na. (ii) Arrange the following in increasing order of their oxides to get reduced with carbon: Al, Na, Fe, Cu. (iii) Arrange the following metals in order of decreasing order of their chemical reactivity: Mg, Ca, Cu, Fe, Na, Zn, Pb. |
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| 3389. |
What is the 1st 2nd 3rd 4th 5th and 6th coordination number for FCC crystal atom? explain with detailed explaination |
| Answer» What is the 1st 2nd 3rd 4th 5th and 6th coordination number for FCC crystal atom? explain with detailed explaination | |
| 3390. |
B2H6 react with (CH3)3N and gives :- 1)Homolytic products 2)Heterolytic products 3)Both (1) and (2) 4)None |
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Answer» B2H6 react with (CH3)3N and gives :- 1)Homolytic products 2)Heterolytic products 3)Both (1) and (2) 4)None |
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| 3391. |
H2S is a toxic gas used in qualitative analysis.If solubility of H2S in water at STP is 0.195 m,what is the value of K_H? (a) 0.0263 bar(c) 192 bar(b) 69.16 bar(d) 282 bar |
| Answer» H2S is a toxic gas used in qualitative analysis.If solubility of H2S in water at STP is 0.195 m,what is the value of K_H? (a) 0.0263 bar(c) 192 bar(b) 69.16 bar(d) 282 bar | |
| 3392. |
5.How many elements are naturally occurring elements among the discovered elements till now? |
| Answer» 5.How many elements are naturally occurring elements among the discovered elements till now? | |
| 3393. |
explain the conclusions derived from electrochemical series |
| Answer» explain the conclusions derived from electrochemical series | |
| 3394. |
41. If electron affinity of an atom is 500kJ/mol at 27^° C, then Δ H(eg) will be: 1) 500kJ/mol 2) 6732kJ/mol 3) 506.24kJ/mol 4) 500kJ/mol |
| Answer» 41. If electron affinity of an atom is 500kJ/mol at 27^° C, then Δ H(eg) will be: 1) 500kJ/mol 2) 6732kJ/mol 3) 506.24kJ/mol 4) 500kJ/mol | |
| 3395. |
What is the chemical formula of gypsum? |
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Answer» What is the chemical formula of gypsum? |
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| 3396. |
CH_3CH_2-Cl +Ag_{2 |
| Answer» CH_3CH_2-Cl +Ag_{2 | |
| 3397. |
Question 35An element X has a mass number 4 and atomic number 2. Write the valency of this element. |
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Answer» Question 35 An element X has a mass number 4 and atomic number 2. Write the valency of this element. |
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| 3398. |
Complete and balance the given chemical reaction.CH3CH2CH2CH3(g)+O2(g)→ |
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Answer» Complete and balance the given chemical reaction. |
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| 3399. |
The microorganism which plays an important role in the conversion of ethanol to acetic acid belongs to the family of |
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Answer» The microorganism which plays an important role in the conversion of ethanol to acetic acid belongs to the family of |
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| 3400. |
Explain Cathodic protection and alloying method to prevent corrosion with examples? [5 MARKS] |
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Answer» Explain Cathodic protection and alloying method to prevent corrosion with examples? [5 MARKS] |
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