InterviewSolution
Saved Bookmarks
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.
| 1801. |
What term is used for the wise & careful use of resources? |
|
Answer» What term is used for the wise & careful use of resources? |
|
| 1802. |
1How to do nomenclature of cyclic compounds other than benzene and benzene if more substituents, double bond and triple bond are there how numbering is done? 2 And whether chain isomerism is only shown by alkanes? |
|
Answer» 1How to do nomenclature of cyclic compounds other than benzene and benzene if more substituents, double bond and triple bond are there how numbering is done? 2 And whether chain isomerism is only shown by alkanes? |
|
| 1803. |
Question 46.A dry pellet of a common base B, when kept in open absorbs moisture and turns sticky. The compound is also a by-product of chlor-alkali process. Identify B, what type of reaction occurs when B is treated with an acidic oxide ? Write a balanced chemical equation for one such solution. |
|
Answer» Question 46. A dry pellet of a common base B, when kept in open absorbs moisture and turns sticky. The compound is also a by-product of chlor-alkali process. Identify B, what type of reaction occurs when B is treated with an acidic oxide ? Write a balanced chemical equation for one such solution. |
|
| 1804. |
what is diazonium salt? |
| Answer» what is diazonium salt? | |
| 1805. |
Question 20 Give an example of a chemical reaction for each of the following situations: (a) A change in colour is observed. (b) A gas is evolved (c) Sound is produced. |
|
Answer» Question 20 Give an example of a chemical reaction for each of the following situations: |
|
| 1806. |
Give one example for each of the following types of mixtures. (a) solid-solid heterogeneous mixture(b) solid-liquid heterogeneous mixture(c) liquid-liquid heterogeneous mixture(d) liquid-gas heterogeneous mixture |
|
Answer» Give one example for each of the following types of mixtures. (a) solid-solid heterogeneous mixture (b) solid-liquid heterogeneous mixture (c) liquid-liquid heterogeneous mixture (d) liquid-gas heterogeneous mixture |
|
| 1807. |
How can you show curdling of milk is a chemical change? |
|
Answer» How can you show curdling of milk is a chemical change? |
|
| 1808. |
Describe the process of neutralisation with the help of an example. |
|
Answer» Describe the process of neutralisation with the help of an example. |
|
| 1809. |
Which solution will show the highest resistance during the passage of current? |
|
Answer» Which solution will show the highest resistance during the passage of current? |
|
| 1810. |
The structure of Fe2Cl6 is best represented as |
|
Answer» The structure of Fe2Cl6 is best represented as |
|
| 1811. |
What is the catalyst used in the catalytic oxidation of ammonia? |
|
Answer» What is the catalyst used in the catalytic oxidation of ammonia? |
|
| 1812. |
Find out the relationship between molecular masses of A and B.Pressure of1 g of gas A at 27^° C is 2atm . Pressure becomes 3 atm when 2 g of another gas B is introduced in the same flask. (1) M\lbrack A\rbrack= 4M\lbrack B\rbrack (2) M\lbrack B\rbrack=4 M\lbrack A\rbrack (3) M\lbrack A\rbrack=2M\lbrack B\rbrack÷3 (4) M\lbrack B\rbrack=M\lbrack A\rbrack÷ |
| Answer» Find out the relationship between molecular masses of A and B.Pressure of1 g of gas A at 27^° C is 2atm . Pressure becomes 3 atm when 2 g of another gas B is introduced in the same flask. (1) M\lbrack A\rbrack= 4M\lbrack B\rbrack (2) M\lbrack B\rbrack=4 M\lbrack A\rbrack (3) M\lbrack A\rbrack=2M\lbrack B\rbrack÷3 (4) M\lbrack B\rbrack=M\lbrack A\rbrack÷ | |
| 1813. |
32 Percentage composition of organic mono basic acid containing C, Hand O C=40% H=6.67% vapour density of its ethy ether is 44 find molecular formula of the acid |
| Answer» 32 Percentage composition of organic mono basic acid containing C, Hand O C=40% H=6.67% vapour density of its ethy ether is 44 find molecular formula of the acid | |
| 1814. |
Explain the structure of a cyclone. How has advanced technology helped in reducing the impact of cyclones? |
|
Answer» Explain the structure of a cyclone. How has advanced technology helped in reducing the impact of cyclones? |
|
| 1815. |
Which of the following substances change colour of China rose indicator to green? |
|
Answer» Which of the following substances change colour of China rose indicator to green? |
|
| 1816. |
Explain the cooling curve in crystalline and amorphous solids. |
| Answer» Explain the cooling curve in crystalline and amorphous solids. | |
| 1817. |
Question 1A solution turns red litmus blue; its pH is likely to be:1. 12. 43. 54. 10 |
|
Answer» Question 1 A solution turns red litmus blue; its pH is likely to be: 1. 1 2. 4 3. 5 4. 10 |
|
| 1818. |
Why doesn't the paper burn in case 1 whereas it does in case 2? [3 MARKS] |
|
Answer» Why doesn't the paper burn in case 1 whereas it does in case 2? [3 MARKS]
|
|
| 1819. |
Which component of air is commonly used in fire extinguishers and why? |
|
Answer» Which component of air is commonly used in fire extinguishers and why? |
|
| 1820. |
the reaction a+2b+c-->2d+e is found to br 1,2 and 0 order with respect to a, b and c respectively.what will be the final rate, if concentration of each reactant is doubled? |
| Answer» the reaction a+2b+c-->2d+e is found to br 1,2 and 0 order with respect to a, b and c respectively.what will be the final rate, if concentration of each reactant is doubled? | |
| 1821. |
Give reasons. (a) Air pollution has increased. (b) We should make greater use of public transport. (c) Diversity in plants is reducing day by day. (d) Wet garbage should be properly managed. |
|
Answer» Give reasons. (a) Air pollution has increased. (b) We should make greater use of public transport. (c) Diversity in plants is reducing day by day. (d) Wet garbage should be properly managed.
|
|
| 1822. |
Rashi found wheat grains mixed with powdered dry leaves. How can she separate the two of them easily? Explain the whole mechanism in detail. [5 MARKS] |
|
Answer» Rashi found wheat grains mixed with powdered dry leaves. How can she separate the two of them easily? Explain the whole mechanism in detail. [5 MARKS] |
|
| 1823. |
Which of the following steps are involved in the processing of wool? |
|
Answer» Which of the following steps are involved in the processing of wool? |
|
| 1824. |
Question 2Fe2O3+2Al→Al2O3+2FeThe above reaction is an example of a: |
|
Answer» Question 2 Fe2O3+2Al→Al2O3+2Fe The above reaction is an example of a: |
|
| 1825. |
A first order reaction has a half life of 1 min. The time required for 99.9% completion of the reaction is _____min. (Round off to the nearest integer) [ Use ln2 = 0.69, ln10 = 2.3] |
|
Answer» A first order reaction has a half life of 1 min. The time required for 99.9% completion of the reaction is _____min. (Round off to the nearest integer) [ Use ln2 = 0.69, ln10 = 2.3] |
|
| 1826. |
Which of the following materials is preferred for making heating element? |
|
Answer» Which of the following materials is preferred for making heating element? |
|
| 1827. |
The common names of Cao and Ca(OH)2 respectively are ___ and ___. |
|
Answer» The common names of Cao and Ca(OH)2 respectively are |
|
| 1828. |
During electrolytic refining of copper, which of the following is used as an electrolyte? |
|
Answer» During electrolytic refining of copper, which of the following is used as an electrolyte? |
|
| 1829. |
The atoms or molecules of a solid are always arranged in a regular pattern . Do you agree ? Give reasons Pls explain the question and answer in detail |
|
Answer» The atoms or molecules of a solid are always arranged in a regular pattern . Do you agree ? Give reasons Pls explain the question and answer in detail |
|
| 1830. |
Curdling of milk is a chemical change.give reason. |
| Answer» Curdling of milk is a chemical change.give reason. | |
| 1831. |
Which of the following is wastewater? |
|
Answer» Which of the following is wastewater? |
|
| 1832. |
Identify marwari goat from the given images. |
|
Answer» Identify marwari goat from the given images. |
|
| 1833. |
Resis†an ce of a metal wire of length 1m is 26Ohms at 20 degree C .If the diameter of the wire is 0.3mm what will be the resistivity of the metal at that temperature |
| Answer» Resis†an ce of a metal wire of length 1m is 26Ohms at 20 degree C .If the diameter of the wire is 0.3mm what will be the resistivity of the metal at that temperature | |
| 1834. |
58.a brass scale of a barometer gives correct reading at 0^°C. alpha of brass=0.00002/^°C.the barometer reads 75cm at 27^°C.the atmospheric pressure at 0^°C is: a)74.20cm b)74.62cm c)74.92cm d)75.04cm |
| Answer» 58.a brass scale of a barometer gives correct reading at 0^°C. alpha of brass=0.00002/^°C.the barometer reads 75cm at 27^°C.the atmospheric pressure at 0^°C is: a)74.20cm b)74.62cm c)74.92cm d)75.04cm | |
| 1835. |
Define the following terms:(i) Atomic mass(ii) Molecular mass(iii) Formula mass |
|
Answer» Define the following terms: (i) Atomic mass (ii) Molecular mass (iii) Formula mass |
|
| 1836. |
Question 1Metallic oxides of zinc, magnesium and copper were heated with the following metals.MetalZincMagnesiumCopperZinc oxide−−−Magnesium oxide−−−Copper oxide−−−In which cases will you find displacement reactions taking place? |
|
Answer» Question 1 Metallic oxides of zinc, magnesium and copper were heated with the following metals. MetalZincMagnesiumCopperZinc oxide−−−Magnesium oxide−−−Copper oxide−−− In which cases will you find displacement reactions taking place? |
|
| 1837. |
Why the no.of moles of the products and the reactants are always equal to each other in any balanced chemical equation?? |
| Answer» Why the no.of moles of the products and the reactants are always equal to each other in any balanced chemical equation?? | |
| 1838. |
What needs to be followed while writing the name of a binary ionic compound? |
|
Answer» What needs to be followed while writing the name of a binary ionic compound? |
|
| 1839. |
Why does temperature of boiling water not change? |
|
Answer» Why does temperature of boiling water not change? |
|
| 1840. |
46. What is the observation when phenolphthalein is added to a basic solution? |
| Answer» 46. What is the observation when phenolphthalein is added to a basic solution? | |
| 1841. |
Think about a method by which chalk and water or even clay and water can be separated. |
|
Answer» Think about a method by which chalk and water or even clay and water can be separated. |
|
| 1842. |
Question 5The two forms of oxygen found in the atmosphere are:(a) water and ozone(b) water and oxygen(c) ozone and oxygen(d) water and carbon dioxide |
|
Answer» Question 5 |
|
| 1843. |
Pick the right order based on their hardness - wood, iron, paper. |
|
Answer» Pick the right order based on their hardness - wood, iron, paper. |
|
| 1844. |
what is initial method? |
| Answer» what is initial method? | |
| 1845. |
Cryolite is an ore of ___ |
|
Answer» Cryolite is an ore of |
|
| 1846. |
15.Consider the a hypothetical reaction 3A+B+2C--->D+2E In which rate of formation of D is given by k[A][B] square In order to convert the given rate law to an expression showing the rate of disappearance of C, it would be necessary to multiply the RHS by ?? a)1/2 b)2 c)4 d)8 |
| Answer» 15.Consider the a hypothetical reaction 3A+B+2C--->D+2E In which rate of formation of D is given by k[A][B] square In order to convert the given rate law to an expression showing the rate of disappearance of C, it would be necessary to multiply the RHS by ?? a)1/2 b)2 c)4 d)8 | |
| 1847. |
Dried ___ is used as manure. |
|
Answer» Dried |
|
| 1848. |
What are the possible values of pH? |
|
Answer» What are the possible values of pH? |
|
| 1849. |
Who gave the four laws of chemical combination? |
| Answer» Who gave the four laws of chemical combination? | |
| 1850. |
Why do we balance the chemical equation ? |
| Answer» Why do we balance the chemical equation ? | |
