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.
| 9501. |
Pick the correct option of elements present in human body |
|
Answer» Pick the correct option of elements present in human body |
|
| 9502. |
Alloys cannot be separated by physical means, though it is considered mixture, Why? |
|
Answer» Alloys cannot be separated by physical means, though it is considered mixture, Why? |
|
| 9503. |
Name the scientists who described the arrangement of electrons in an atom? |
|
Answer» Name the scientists who described the arrangement of electrons in an atom? |
|
| 9504. |
Is vacuum a matter? |
|
Answer» Is vacuum a matter? |
|
| 9505. |
Which of the following does not have a fixed melting point/boiling point ? (a) gold (b) ethanol (c) air (d) oxygen |
|
Answer» Which of the following does not have a fixed melting point/boiling point ? (a) gold (b) ethanol (c) air (d) oxygen |
|
| 9506. |
The conversion of a solid into vapours without passing through the liquid state is called: (a) vaporisation (b) fusion (c) sublimation (d) freezing |
|
Answer» The conversion of a solid into vapours without passing through the liquid state is called: (a) vaporisation (b) fusion (c) sublimation (d) freezing |
|
| 9507. |
A gas exerts pressure on the walls of the container. Why? [2MARKS] |
|
Answer» A gas exerts pressure on the walls of the container. Why? [2MARKS] |
|
| 9508. |
The positive charge on the nucleus is due to the presence of ................ in it. |
|
Answer» The positive charge on the nucleus is due to the presence of ................ in it. |
|
| 9509. |
what is the difference between uniform and non uniform composition? And also are uniform composition and definite composition the same? |
|
Answer» what is the difference between uniform and non uniform composition? And also are uniform composition and definite composition the same? |
|
| 9510. |
What happen when we heat 1. Copper sulphate 2. Ammonium dichromate |
|
Answer» What happen when we heat 1. Copper sulphate 2. Ammonium dichromate |
|
| 9511. |
Nessler's reagent is an aqueous solution which contains |
|
Answer» Nessler's reagent is an aqueous solution which contains |
|
| 9512. |
Illustrate with the help of examples that particles of matter are continuously moving? |
|
Answer» Illustrate with the help of examples that particles of matter are continuously moving? |
|
| 9513. |
Ammonia is heated with black metallic oxide X to give reddish brown metal Y. What is X and Y? |
|
Answer» Ammonia is heated with black metallic oxide X to give reddish brown metal Y. What is X and Y? |
|
| 9514. |
Why do we need a water bath to separate ink from Blue die ? |
|
Answer» Why do we need a water bath to separate ink from Blue die ? |
|
| 9515. |
What electronic transition in Li+2 produces the radiation of the same wave length as the first Line in the Lyman series of hydrogen? |
|
Answer» What electronic transition in Li+2 produces the radiation of the same wave length as the first Line in the Lyman series of hydrogen? |
|
| 9516. |
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. |
|
| 9517. |
Ethers can be classified as simple and: |
|
Answer» Ethers can be classified as simple and: |
|
| 9518. |
Question 1 (b) Convert the following Temperature to Celsius scale: b. 573 K |
|
Answer» Question 1 (b) Convert the following Temperature to Celsius scale: b. 573 K |
|
| 9519. |
Question 1 For the symbol H, D and T tabulate three sub-atomic particles found in each of them? |
|
Answer» Question 1 For the symbol H, D and T tabulate three sub-atomic particles found in each of them? |
|
| 9520. |
The values of ‘n’ for N, M, L and K respectively are: |
|
Answer» The values of ‘n’ for N, M, L and K respectively are: |
|
| 9521. |
'A substance has a definite volume but no definite shape' State whether this substance is a solid a liquid or a gas. |
|
Answer» 'A substance has a definite volume but no definite shape' State whether this substance is a solid a liquid or a gas. |
|
| 9522. |
Question 3 What type of mixtures are separated by the technique of crystallisation? |
|
Answer» Question 3 What type of mixtures are separated by the technique of crystallisation? |
|
| 9523. |
NH4Cl + NaNO2→ ____ + ____ |
|
Answer» NH4Cl + NaNO2→ ____ + ____ |
|
| 9524. |
"The properties of the product are different from those of the constituents". State whether this statement best describes an element, a compound or a mixture. |
|
Answer» "The properties of the product are different from those of the constituents". State whether this statement best describes an element, a compound or a mixture. |
|
| 9525. |
To make a saturated solution, 136g of a salt is dissolved in 500g of water at 293 K. Find its solubility at this temperature. |
|
Answer» To make a saturated solution, 136g of a salt is dissolved in 500g of water at 293 K. Find its solubility at this temperature. |
|
| 9526. |
Given below are a few elements arranged in the order of increasing atomic masses. If every eighth element had properties similar to that of the first, according to Newlands’ Law of Octaves, identify such pairs. (Note: At that time, noble gases were not discovered.) | Li | Be | B | C | N | O | F | Na | Mg | Al | Si | P | S | |
|
Answer» Given below are a few elements arranged in the order of increasing atomic masses. |
|
| 9527. |
How do cathode rays differ from anode rays ? |
|
Answer» How do cathode rays differ from anode rays ? |
|
| 9528. |
(a) What is evaporation? State the various factors which affect evaporation. (b) Why does evaporation cool a liquid? |
|
Answer» (a) What is evaporation? State the various factors which affect evaporation. (b) Why does evaporation cool a liquid? |
|
| 9529. |
Identify a mechanism by which a colloidal solution can be purified. |
|
Answer» Identify a mechanism by which a colloidal solution can be purified. |
|
| 9530. |
What is the Difference between elements and compounds ? |
|
Answer» What is the Difference between elements and compounds ? |
|
| 9531. |
If atoms are not able to exist independently, what about argon (Ar), helium (He) ; it made of 1 atom only right? So therefore how thats able to exist? And hydrogen (H2) , is made of 2 atoms right? So why hydrogen is not able to exist independently? |
|
Answer» If atoms are not able to exist independently, what about argon (Ar), helium (He) ; it made of 1 atom only right? So therefore how thats able to exist? And hydrogen (H2) , is made of 2 atoms right? So why hydrogen is not able to exist independently? |
|
| 9532. |
Out of the following, an example of matter which can be termed as fluid is : (a) carbon (b) sulphur (c) oxygen (d) phosphours |
|
Answer» Out of the following, an example of matter which can be termed as fluid is : (a) carbon (b) sulphur (c) oxygen (d) phosphours |
|
| 9533. |
True or false Teflon is a scratch proof and corrosion resistant plastic? Explain your answer. |
|
Answer» True or false Teflon is a scratch proof and corrosion resistant plastic? Explain your answer. |
|
| 9534. |
Sulphur and oxygen combine in the ratio of 2:3 by mass to form sulphur trioxide. What mass of sulphur would be required to react completely with 24 gram of oxygen? |
| Answer» Sulphur and oxygen combine in the ratio of 2:3 by mass to form sulphur trioxide. What mass of sulphur would be required to react completely with 24 gram of oxygen? | |
| 9535. |
What weight of oxygen gas will number of molecules as 56g of nitrogen gas? How? |
| Answer» What weight of oxygen gas will number of molecules as 56g of nitrogen gas? How? | |
| 9536. |
The volume occupied by 10g of Oxygen at 0o c and 2atm pressure will be approximately |
|
Answer» The volume occupied by 10g of Oxygen at 0o c and 2atm pressure will be approximately |
|
| 9537. |
According to Rutherford’s model, an atom is a miniature solar system, as shown in the picture below. What would be the correct labelling for 1 and 2? |
|
Answer» According to Rutherford’s model, an atom is a miniature solar system, as shown in the picture below. What would be the correct labelling for 1 and 2?
|
|
| 9538. |
Which of these is not a monomer for a high molecular mass silicone polymer? |
|
Answer» Which of these is not a monomer for a high molecular mass silicone polymer? |
|
| 9539. |
Q1. Why does cooler cool better on a hot dry day? |
|
Answer» Q1. Why does cooler cool better on a hot dry day? |
|
| 9540. |
Which of the following is/are correct for group 14 elements? |
|
Answer» Which of the following is/are correct for group 14 elements? |
|
| 9541. |
What exactly a mole of substance or atom would be differing with another? |
|
Answer» What exactly a mole of substance or atom would be differing with another? |
|
| 9542. |
The average mass of an element Z is 41.2. The mass of first isotope is 42 and the ratio of abundance of the first and second isotopes respectively is 4:6. The mass of other isotope is __ u. |
|
Answer» The average mass of an element Z is 41.2. The mass of first isotope is 42 and the ratio of abundance of the first and second isotopes respectively is 4:6. The mass of other isotope is |
|
| 9543. |
Identify the names of the scientists who have proposed the model of an atom. |
|
Answer» Identify the names of the scientists who have proposed the model of an atom. |
|
| 9544. |
Which of the following can transform matter from one state to another? |
|
Answer» Which of the following can transform matter from one state to another? |
|
| 9545. |
Define a compound. Give two points of evidence to show that sodium chloride is a compound. |
|
Answer» Define a compound. Give two points of evidence to show that sodium chloride is a compound. |
|
| 9546. |
What is sublimation plz explain!!! And why does a naphthalene ball disappears without leaving any solid or residue? |
|
Answer» What is sublimation plz explain!!! And why does a naphthalene ball disappears without leaving any solid or residue? |
|
| 9547. |
To separate a mixture of two or more miscible liquids for which the difference in boiling points is less than 25 K, the process used is ___ |
|
Answer» To separate a mixture of two or more miscible liquids for which the difference in boiling points is less than 25 K, the process used is |
|
| 9548. |
It is said that atoms are smallest particles of any matter ,and it is also say that every atom is made up of mainly Three Types of particles electron proton neutron so electron proton and neutron are the smallest particles of matter then it is right or wrong that atoms are a smallest particles of matter. |
|
Answer» It is said that atoms are smallest particles of any matter ,and it is also say that every atom is made up of mainly Three Types of particles electron proton neutron so electron proton and neutron are the smallest particles of matter then it is right or wrong that atoms are a smallest particles of matter. |
|
| 9549. |
Photochemical smog formed in congested metropolitan cities mainly consists of |
|
Answer» Photochemical smog formed in congested metropolitan cities mainly consists of |
|
| 9550. |
What is chromatography? |
|
Answer» What is chromatography? |
|
