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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.
| 4851. |
Oxide of an element A contains A2+ & A3+ ion. If molar ratio of A2+ & A3+ ion is 1/3, what will be the formula of oxide? |
| Answer» Oxide of an element A contains A2+ & A3+ ion. If molar ratio of A2+ & A3+ ion is 1/3, what will be the formula of oxide? | |
| 4852. |
The two oxide of a metal contains 27.6% and 30.0% of oxygen respectively if the formula of first oxide is M3O4 then find that of second |
| Answer» The two oxide of a metal contains 27.6% and 30.0% of oxygen respectively if the formula of first oxide is M3O4 then find that of second | |
| 4853. |
An element X belongs to group 2 and another element Y belongs to group 15 of the periodic table : (a) What is the number of valence electrons in X? (b) What is the valency of X? (b) What is the number of valence electrons in Y? (d) What is the valency of Y? Explain how you have arrived at your answers. |
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Answer» An element X belongs to group 2 and another element Y belongs to group 15 of the periodic table : (a) What is the number of valence electrons in X? (b) What is the valency of X? (b) What is the number of valence electrons in Y? (d) What is the valency of Y? Explain how you have arrived at your answers. |
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| 4854. |
A compound X on electrolysis in aqueous solution produces a strong base. Y along with two gases A and B . B is used in manufacture of bleaching powder. Identify X,Y,Aand B . Write chemical equations |
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Answer» A compound X on electrolysis in aqueous solution produces a strong base. Y along with two gases A and B . B is used in manufacture of bleaching powder. Identify X,Y,Aand B . Write chemical equations |
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| 4855. |
n-factor of HCI in the given reaction isK2Cr2O,+ HCI- KCI+CrCl3 +Cl2 + H20 |
| Answer» n-factor of HCI in the given reaction isK2Cr2O,+ HCI- KCI+CrCl3 +Cl2 + H20 | |
| 4856. |
How change in magnetic moment of electron is affected when ext magnetic field is applied perpendicular to its atomic orbital and also derive the relation shown in picture and explain completely |
| Answer» How change in magnetic moment of electron is affected when ext magnetic field is applied perpendicular to its atomic orbital and also derive the relation shown in picture and explain completely | |
| 4857. |
Why copper halides are stable in its +2 oxidation satate |
| Answer» Why copper halides are stable in its +2 oxidation satate | |
| 4858. |
What do we understand by enzyme substrate? |
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Answer» What do we understand by enzyme substrate? |
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| 4859. |
How many elements were known at the time of Mendeleev? |
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Answer» How many elements were known at the time of Mendeleev? |
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| 4860. |
(a) Aluminium is a more active metal than iron, but suffers less corrosion. Why?(b) Explain and give reasons why aluminium vessels should not be cleaned with powders containing alkalis.(c) Why is the food containing iron salts should not be cooked in aluminium utensils? |
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Answer» (a) Aluminium is a more active metal than iron, but suffers less corrosion. Why? |
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| 4861. |
Choose the correct answer:Which of the following is not a common characteristic of an electrovalent compound?(a) High melting point.(b) Conducts electricity when molten.(c) Consists of oppositely charged ions.(d) Ionises when dissolved in water. |
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Answer» Choose the correct answer: |
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| 4862. |
Which of the following is not a non-metal? |
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Answer» Which of the following is not a non-metal? |
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| 4863. |
What happens when carbon and its compounds are burned in oxygen? |
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Answer» What happens when carbon and its compounds are burned in oxygen? |
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| 4864. |
Among double salt and coordination complex which retain their identity in solution? |
| Answer» Among double salt and coordination complex which retain their identity in solution? | |
| 4865. |
Question 2:Write the properties of acids? |
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Answer» Question 2: Write the properties of acids? |
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| 4866. |
Copy and complete the following sentences choosing the correct word or words from those given in the brackets, at the end of each sentence:(1) The properties of the elements are a periodic function of their _________ (atomic number, mass number, relative atomic mass).(2) Moving across a ________ of the periodic table, the elements show increasing _______ character (group, period, metallic, non-metallic).(3) The element at the bottom of a group would be expected to show ________ metallic character than the element at the top (less, more).(4) The similarities in the properties of elements belonging to a group is because they have the same _________ (electronic configurations, number of outer electrons, atomic number). |
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Answer» Copy and complete the following sentences choosing the correct word or words from those given in the brackets, at the end of each sentence: (1) The properties of the elements are a periodic function of their _________ (atomic number, mass number, relative atomic mass). (2) Moving across a ________ of the periodic table, the elements show increasing _______ character (group, period, metallic, non-metallic). (3) The element at the bottom of a group would be expected to show ________ metallic character than the element at the top (less, more). (4) The similarities in the properties of elements belonging to a group is because they have the same _________ (electronic configurations, number of outer electrons, atomic number). |
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| 4867. |
In which reaction will heat be released–exothermic reaction or endothermic reaction? |
| Answer» In which reaction will heat be released–exothermic reaction or endothermic reaction? | |
| 4868. |
Which of the following polymer type is not classified on the basis of its application and properties? |
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Answer» Which of the following polymer type is not classified on the basis of its application and properties? |
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| 4869. |
. Name a carbonate of a metal which has cleansing properties. |
Answer»
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| 4870. |
An element X on reacting with oxygen forms an oxide X2O. This oxide dissolves in water and turns red litmus blue. State whether element X is a metal or a non metal. Explain with proper example. |
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Answer» An element X on reacting with oxygen forms an oxide X2O. This oxide dissolves in water and turns red litmus blue. State whether element X is a metal or a non metal. Explain with proper example. |
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| 4871. |
What is vinegar and glacial acetic acid? |
| Answer» What is vinegar and glacial acetic acid? | |
| 4872. |
Differentiate between – i) Corrosion and Rancidity ii) Calcination and Roasting |
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Answer» Differentiate between – |
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| 4873. |
31. which of the folowing has lowest weight? 1) 6.023 x 1022 molecules of glucose 2) 18ml of water at 40C 3) 11200ml of CH4 at stp 4) 5.6 litre of CO2 at stp |
| Answer» 31. which of the folowing has lowest weight? 1) 6.023 x 1022 molecules of glucose 2) 18ml of water at 40C 3) 11200ml of CH4 at stp 4) 5.6 litre of CO2 at stp | |
| 4874. |
Assertion (A): Organism uses up to 90% of its food energy for its life processes.Reason (R): 10% of energy goes into new body cells and will be available to the next animal when it gets eaten. |
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Answer» Assertion (A): Organism uses up to 90% of its food energy for its life processes. |
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| 4875. |
what us the value of pH of 0.01M glycine solution . For glycine ka1=4.5×10^-3and ka2 =1.7×10^-10 at 298k ?? (1) 3.0 (2) 10.0 (3) 6.1 (4) 7.2 |
| Answer» what us the value of pH of 0.01M glycine solution . For glycine ka1=4.5×10^-3and ka2 =1.7×10^-10 at 298k ?? (1) 3.0 (2) 10.0 (3) 6.1 (4) 7.2 | |
| 4876. |
decomposition of biodegradable materials is an endothermic or exothermic ? |
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Answer» decomposition of biodegradable materials is an endothermic or exothermic ? |
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| 4877. |
State Avogadro's law. |
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Answer» State Avogadro's law. |
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| 4878. |
Can't we use galvanized iron instead of cathodic protection and bury the pipeline under the earth's surface |
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Answer» Can't we use galvanized iron instead of cathodic protection and bury the pipeline under the earth's surface |
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| 4879. |
What are polar covalent bonds? |
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Answer» What are polar covalent bonds? |
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| 4880. |
What is the mass of a mole of water containing 50% of heavy water(D_2O)? What is the mass of a molecule of carbon-14dioxide({}^{14}CO_2) |
| Answer» What is the mass of a mole of water containing 50% of heavy water(D_2O)? What is the mass of a molecule of carbon-14dioxide({}^{14}CO_2) | |
| 4881. |
58 When CO2 is passed through solution of calcium hydroxide, which on of the following compound is precipitated?and why? (A) calcium bicarbonate (B) calcium hydroxide (C) calcium carbonate (D) calcium oxide |
| Answer» 58 When CO2 is passed through solution of calcium hydroxide, which on of the following compound is precipitated?and why? (A) calcium bicarbonate (B) calcium hydroxide (C) calcium carbonate (D) calcium oxide | |
| 4882. |
Question 06.Calcium phosphate is present in tooth enamel. Its nature is (a) basic(b) acidic(c) neutral(d) amphoteric |
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Answer» Question 06. |
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| 4883. |
14 g of element X combines with 16 g of oxygen.On the basis of this information, which of thefollowing is a correct statement:- (1) The element X could have an atomic wt. of 7 andits oxide is XO (2) The element X could have an atomic weight of14 and its oxide is X O (3) The element X could have an atomic weight of 7and its oxide is X,O (4) The element X could have an atomic weight of14 and its oxide is XO,33 |
| Answer» 14 g of element X combines with 16 g of oxygen.On the basis of this information, which of thefollowing is a correct statement:- (1) The element X could have an atomic wt. of 7 andits oxide is XO (2) The element X could have an atomic weight of14 and its oxide is X O (3) The element X could have an atomic weight of 7and its oxide is X,O (4) The element X could have an atomic weight of14 and its oxide is XO,33 | |
| 4884. |
43. Is the solution of Ca(HCO3)2 acidic ? |
| Answer» 43. Is the solution of Ca(HCO3)2 acidic ? | |
| 4885. |
Prepare a Bank Reconciliation Statement on 31st December 2009 for the following when overdraft as per pass book is Rs.20,000. (1) Cheques issued,but not presented for payment Rs.25,000. (2) Interest on bank overdraft charged by the bank,but not entered in cash book Rs.1,000. (3) Cheque deposited but not collected Rs.22,000. (4) Insurance premium Rs.500 paid by bank under standing order but not recorded in cash book. |
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Answer» Prepare a Bank Reconciliation Statement on 31st December 2009 for the following when overdraft as per pass book is Rs.20,000. (1) Cheques issued,but not presented for payment Rs.25,000. (2) Interest on bank overdraft charged by the bank,but not entered in cash book Rs.1,000. (3) Cheque deposited but not collected Rs.22,000. (4) Insurance premium Rs.500 paid by bank under standing order but not recorded in cash book. |
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| 4886. |
What type of reaction involved in black and white photography. |
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Answer» What type of reaction involved in black and white photography. |
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| 4887. |
Why are green plants called producers ?for 2 marks |
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Answer» Why are green plants called producers ?for 2 marks |
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| 4888. |
When electricity is passed through an aqueous solution of brine, it decomposes to form 'X'. This process is called 'Y' becuase of the products formed. Products 'Z' and 'W' are formed at the cathode and the anode respectively. Identify, X, Y, Z and W. |
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Answer» When electricity is passed through an aqueous solution of brine, it decomposes to form 'X'. This process is called 'Y' becuase of the products formed. Products 'Z' and 'W' are formed at the cathode and the anode respectively. Identify, X, Y, Z and W. |
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| 4889. |
20ml of CO is exploded with 30 ml of O2 .Final volume of the gases will be? |
| Answer» 20ml of CO is exploded with 30 ml of O2 .Final volume of the gases will be? | |
| 4890. |
Draw the structures of isomers of butene and write their IUPAC names. |
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Answer» Draw the structures of isomers of butene and write their IUPAC names. |
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| 4891. |
Can carbon form two double bonds by sharing two pairs of electrons? |
| Answer» Can carbon form two double bonds by sharing two pairs of electrons? | |
| 4892. |
preparation of hydrogen peroxide |
| Answer» preparation of hydrogen peroxide | |
| 4893. |
Choose the combination that contains metals whose ores are most appropriate for roasting. |
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Answer» Choose the combination that contains metals whose ores are most appropriate for roasting. |
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| 4894. |
3 gm of carbon react completely with 5 gm of oxygen then calculate mol percentage of CO formed. a.80. b.75 c.50. d.90 |
| Answer» 3 gm of carbon react completely with 5 gm of oxygen then calculate mol percentage of CO formed. a.80. b.75 c.50. d.90 | |
| 4895. |
What is importance of concept of enthalpy?? |
| Answer» What is importance of concept of enthalpy?? | |
| 4896. |
Where does hydrogen occur in a free state? |
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Answer» Where does hydrogen occur in a free state? |
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| 4897. |
what is meant by R'(R dash) |
| Answer» what is meant by R'(R dash) | |
| 4898. |
What is dipole moment? Why do cis-trans isomers have different boiling point? |
| Answer» What is dipole moment? Why do cis-trans isomers have different boiling point? | |
| 4899. |
what happens when dilute sulphuric acid is poured on copper plate ? |
| Answer» what happens when dilute sulphuric acid is poured on copper plate ? | |
| 4900. |
the amount of energy released in neutralization reaction between strong acid and strong base is. |
| Answer» the amount of energy released in neutralization reaction between strong acid and strong base is. | |