5083 + Interview Questions in Chemistry Page 6 InterviewSolution

251.	Which of the following are obtained from living things?
Answer» Which of the following are obtained from living things?

Discussion

252.	Is clotting of blood physical or chemical change? (with reason)
Answer» Is clotting of blood physical or chemical change? (with reason)

Discussion

253.	What is chlorination of water and how it works? Please explain with examples.
Answer» What is chlorination of water and how it works? Please explain with examples.

Discussion

254.	Statement 1: There are two types of changes that occur with the food in mouth. First, is a physical change and the second is a chemical change. Statement 2: Digestion of food starts in the mouth. Choose the correct option based on whether the statements are true or false.
Answer» Statement 1: There are two types of changes that occur with the food in mouth. First, is a physical change and the second is a chemical change. Statement 2: Digestion of food starts in the mouth. Choose the correct option based on whether the statements are true or false.

254.

Statement 1: There are two types of changes that occur with the food in mouth. First, is a physical change and the second is a chemical change. Statement 2: Digestion of food starts in the mouth. Choose the correct option based on whether the statements are true or false.

Answer»

Statement 1: There are two types of changes that occur with the food in mouth. First, is a physical change and the second is a chemical change.

Statement 2: Digestion of food starts in the mouth.

Choose the correct option based on whether the statements are true or false.

Discussion

255.	Paheli wrote a food chain in the following way:Frog --> Eagle --> Insects --> Grass --> Snake The chain is not in the correct order. Help her to write the food chain correctly.
Answer» Paheli wrote a food chain in the following way: Frog --> Eagle --> Insects --> Grass --> Snake The chain is not in the correct order. Help her to write the food chain correctly.

Discussion

256.	What is the chemical equation for sulphuric acid. What is H2SO4.
Answer» What is the chemical equation for sulphuric acid. What is H₂SO_4.

Discussion

257.	How desert soil is transported from one place to another?
Answer» How desert soil is transported from one place to another?

Discussion

258.	an ideal gas is compressed in a closed container its U will increase decrease or remain cons†an t ?
Answer» an ideal gas is compressed in a closed container its U will increase decrease or remain cons†an t ?

Discussion

259.	Which of these alkaloids are obtained from sarpagandha plant?
Answer» Which of these alkaloids are obtained from sarpagandha plant?

Discussion

260.	Which of the following hair of sheep is used for making fine, soft woolen fabrics ?
Answer» Which of the following hair of sheep is used for making fine, soft woolen fabrics ?

Discussion

261.	Which of these substances are soapy in touch?
Answer» Which of these substances are soapy in touch?

Discussion

262.	Which is the acid in tamarind?
Answer» Which is the acid in tamarind?

Discussion

263.	Sort the following in the correct order of making a cloth.
Answer» Sort the following in the correct order of making a cloth.

Discussion

264.	The leaves die in a dark room. This shows the importance of:
Answer» The leaves die in a dark room. This shows the importance of:

Discussion

265.	Question 3Which one of the following statements is true about a Biosphere Reserve?(a) It is a protected area where only endemic species live.(b) It is meant only for the conservation of plants and animals.(c) It is meant to conserve both, the biodiversity and the culture of that area.(d) There are no other protected areas within its limits.
Answer» Question 3 Which one of the following statements is true about a Biosphere Reserve? (a) It is a protected area where only endemic species live. (b) It is meant only for the conservation of plants and animals. (c) It is meant to conserve both, the biodiversity and the culture of that area. (d) There are no other protected areas within its limits.

Discussion

266.	According to democritus - "When matter is divided into smaller and smaller particles, ultimately a stage is reached when the particles cannot divide further into smaller particles. These tiny particles are called ___."
Answer» According to democritus - "When matter is divided into smaller and smaller particles, ultimately a stage is reached when the particles cannot divide further into smaller particles. These tiny particles are called ___."

Discussion

267.	40. A SOLUTION CONTAINS 90%H2SO4 AND 10% WATER . WHICH IS SOLUTE,SOLVENT
Answer» 40. A SOLUTION CONTAINS 90%H2SO4 AND 10% WATER . WHICH IS SOLUTE,SOLVENT

Discussion

268.	Precesion meaning
Answer» Precesion meaning

Discussion

269.	What is an irreversible change? Give two examples.
Answer» What is an irreversible change? Give two examples.

Discussion

270.	Thermal stability order :- XeF_6 ,XeO_3 ,XeO_2F_2
Answer» Thermal stability order :- XeF_6 ,XeO_3 ,XeO_2F_2

Discussion

271.	Name the reaction in which an acid and a base mix together and give out salt and water.
Answer» Name the reaction in which an acid and a base mix together and give out salt and water.

Discussion

272.	Why potassium nitrate is not used for laboratory preparation of oxygen?
Answer» Why potassium nitrate is not used for laboratory preparation of oxygen?

Discussion

273.	How does deforestation occur?
Answer» How does deforestation occur?

Discussion

274.	The speed-density relationship in a mid-block section of a highway follows the Greenshield's model. If the free flow speed is vf and the jam density is kj, the maximum flow observed on this section is
Answer» The speed-density relationship in a mid-block section of a highway follows the Greenshield's model. If the free flow speed is $v_{f}$ and the jam density is $k_{j}$ , the maximum flow observed on this section is

Discussion

275.	Which ion in body helps for incresing the strength of bones?
Answer» Which ion in body helps for incresing the strength of bones?

Discussion

276.	During a chemical reaction, if the reactants have more chemical energy than the products formed,
Answer» During a chemical reaction, if the reactants have more chemical energy than the products formed,

Discussion

277.	Write the following in the form of a word equation: Sodium hydroxide reacts with calcium bromide to form calcium hydroxide and sodium bromide.In the formula CaBr2 what does Ca stand for and what is its valency?
Answer» Write the following in the form of a word equation: Sodium hydroxide reacts with calcium bromide to form calcium hydroxide and sodium bromide.In the formula $C a B r_{2}$ what does Ca stand for and what is its valency?

Discussion

278.	Which among the following options correctly represents the percolation rate for a sample of soil?
Answer» Which among the following options correctly represents the percolation rate for a sample of soil?

Discussion

279.	An oxide of iron contains 72.41% iron what is the empirical formula of the compound
Answer» An oxide of iron contains 72.41% iron what is the empirical formula of the compound

Discussion

280.	Which element is essential for burning of fuel?
Answer» Which element is essential for burning of fuel?

Discussion

281.	Question 18What will happen if deer is missing in the food chain given below?Grass → Deer → Tiger(a) The population of tiger increases(b) The population of grass decreases(c) Tiger will start eating grass(d) The population of tiger decreases and the population of grass increases
Answer» Question 18 What will happen if deer is missing in the food chain given below? Grass $\to$ Deer $\to$ Tiger (a) The population of tiger increases (b) The population of grass decreases (c) Tiger will start eating grass (d) The population of tiger decreases and the population of grass increases

Discussion

282.	The following figure shows a/an _____________________ change.
Answer» The following figure shows a/an _____________________ change.

282.

The following figure shows a/an _____________________ change.

Answer»

The following figure shows a/an _____________________ change.

Discussion

283.	A simple pendulum takes 32 seconds to complete 20 oscillations. What is the time period of the pendulum?
Answer» A simple pendulum takes 32 seconds to complete 20 oscillations. What is the time period of the pendulum?

Discussion

284.	Q16. A compound has following composition Na 14,13%, S = 9.978&, O=69.5% and H 6.22% Calculatemolecular fomula of compound assuming that whole hydrogen in the compound is present as water ofcrystallis ation. (Molecular mass of compound is 322)
Answer» Q16. A compound has following composition Na 14,13%, S = 9.978&, O=69.5% and H 6.22% Calculatemolecular fomula of compound assuming that whole hydrogen in the compound is present as water ofcrystallis ation. (Molecular mass of compound is 322)

Discussion

285.	Two concentric spheres of radii r and 2r are maintained at 100°C and 0°C respectively. Thermal conductivity of material filled between the spheres is k and If temperature at radial distance 1.5R is T1,find T1.
Answer» Two concentric spheres of radii r and 2r are maintained at 100°C and 0°C respectively. Thermal conductivity of material filled between the spheres is k and If temperature at radial distance 1.5R is T1,find T1.

Discussion

286.	Which of these will show color change with china rose indicator?
Answer» Which of these will show color change with china rose indicator?

Discussion

287.	What is environment? What is environmental pollution?
Answer» What is environment? What is environmental pollution?

Discussion

288.	Himanshu has two substances A and B. The extract of red cabbage turns green when mixed with A and turns pink when mixed with B. When a solution of A and B is taken it turns red litmus to blue. Which of the following statement(s) is/are correct?
Answer» Himanshu has two substances A and B. The extract of red cabbage turns green when mixed with A and turns pink when mixed with B. When a solution of A and B is taken it turns red litmus to blue. Which of the following statement(s) is/are correct?

Discussion

289.	Why fullerene is aromatic but not graphite although both have delocalised electrons?
Answer» Why fullerene is aromatic but not graphite although both have delocalised electrons?

Discussion

290.	What's the unit of Molality?
Answer» What's the unit of Molality?

Discussion

291.	Which of the following is not a matter?
Answer» Which of the following is not a matter?

Discussion

292.	Why is open drainage system not preferred while planning a town or a city? Explain with an example. [3 MARKS]
Answer» Why is open drainage system not preferred while planning a town or a city? Explain with an example. [3 MARKS]

Discussion

293.	Name two metals that are used to make wires. Also mention the state in which they are found.
Answer» Name two metals that are used to make wires. Also mention the state in which they are found.

Discussion

294.	What is the mass of 4.82 x 1025 molecules of H2O in grams? ___
Answer» What is the mass of 4.82 x $10^{25}$ molecules of $H_{2} O$ in grams? ___

Discussion

295.	Write the electronic configuration of the following:1. Na2. Ca2+3. P3−4. F
Answer» Write the electronic configuration of the following: 1. $N a$ 2. $C a^{2 +}$ 3. $P^{3 -}$ 4. $F$

Discussion

296.	cooh-cooh decomposes to co + co2 +h2o. cooh-cooh is 10g. Find the mass of co, co2 and h20 using POAC.
Answer» cooh-cooh decomposes to co + co2 +h2o. cooh-cooh is 10g. Find the mass of co, co2 and h20 using POAC.

Discussion

297.	Why liquids do not have a definite shape?
Answer» Why liquids do not have a definite shape?

Discussion

298.	Vous êtes dans un restaurant avec votre famille. Écrivez un dialogue. (environ 40 mots)Vous pouvez utiliser les verbes donnés ci-dessous.prendre, préférer, appeler, demander, se dépêcher, payer, donner, apporter, dire, vouloir,manger, boire
Answer» Vous êtes dans un restaurant avec votre famille. Écrivez un dialogue. (environ 40 mots) Vous pouvez utiliser les verbes donnés ci-dessous. prendre, préférer, appeler, demander, se dépêcher, payer, donner, apporter, dire, vouloir, manger, boire

Discussion

299.	A solid that does not dissolve in a solution is termed as:
Answer» A solid that does not dissolve in a solution is termed as:

Discussion

300.	Explain the colour change of red cabbage extract in presence of a base.
Answer» Explain the colour change of red cabbage extract in presence of a base.

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following are obtained from living things?

Is clotting of blood physical or chemical change? (with reason)

What is chlorination of water and how it works? Please explain with examples.

Statement 1: There are two types of changes that occur with the food in mouth. First, is a physical change and the second is a chemical change. Statement 2: Digestion of food starts in the mouth. Choose the correct option based on whether the statements are true or false.

Paheli wrote a food chain in the following way:Frog --> Eagle --> Insects --> Grass --> Snake The chain is not in the correct order. Help her to write the food chain correctly.

What is the chemical equation for sulphuric acid. What is H2SO4.

How desert soil is transported from one place to another?

an ideal gas is compressed in a closed container its U will increase decrease or remain cons†an t ?

Which of these alkaloids are obtained from sarpagandha plant?

Which of the following hair of sheep is used for making fine, soft woolen fabrics ?

Which of these substances are soapy in touch?

Which is the acid in tamarind?

Sort the following in the correct order of making a cloth.

The leaves die in a dark room. This shows the importance of:

According to democritus - "When matter is divided into smaller and smaller particles, ultimately a stage is reached when the particles cannot divide further into smaller particles. These tiny particles are called ___."

40. A SOLUTION CONTAINS 90%H2SO4 AND 10% WATER . WHICH IS SOLUTE,SOLVENT

Precesion meaning

What is an irreversible change? Give two examples.

Thermal stability order :- XeF_6 ,XeO_3 ,XeO_2F_2

Name the reaction in which an acid and a base mix together and give out salt and water.

Why potassium nitrate is not used for laboratory preparation of oxygen?

How does deforestation occur?

The speed-density relationship in a mid-block section of a highway follows the Greenshield's model. If the free flow speed is vf and the jam density is kj, the maximum flow observed on this section is

Which ion in body helps for incresing the strength of bones?

During a chemical reaction, if the reactants have more chemical energy than the products formed,

Write the following in the form of a word equation: Sodium hydroxide reacts with calcium bromide to form calcium hydroxide and sodium bromide.In the formula CaBr2​ what does Ca stand for and what is its valency?

Which among the following options correctly represents the percolation rate for a sample of soil?

An oxide of iron contains 72.41% iron what is the empirical formula of the compound

Which element is essential for burning of fuel?

Question 18What will happen if deer is missing in the food chain given below?Grass → Deer → Tiger(a) The population of tiger increases(b) The population of grass decreases(c) Tiger will start eating grass(d) The population of tiger decreases and the population of grass increases

The following figure shows a/an _____________________ change.

A simple pendulum takes 32 seconds to complete 20 oscillations. What is the time period of the pendulum?

Q16. A compound has following composition Na 14,13%, S = 9.978&, O=69.5% and H 6.22% Calculatemolecular fomula of compound assuming that whole hydrogen in the compound is present as water ofcrystallis ation. (Molecular mass of compound is 322)

Two concentric spheres of radii r and 2r are maintained at 100°C and 0°C respectively. Thermal conductivity of material filled between the spheres is k and If temperature at radial distance 1.5R is T1,find T1.

Which of these will show color change with china rose indicator?

What is environment? What is environmental pollution?

Himanshu has two substances A and B. The extract of red cabbage turns green when mixed with A and turns pink when mixed with B. When a solution of A and B is taken it turns red litmus to blue. Which of the following statement(s) is/are correct?

Why fullerene is aromatic but not graphite although both have delocalised electrons?

What's the unit of Molality?

Which of the following is not a matter?

Why is open drainage system not preferred while planning a town or a city? Explain with an example. [3 MARKS]

Name two metals that are used to make wires. Also mention the state in which they are found.

What is the mass of 4.82 x 1025 molecules of H2O in grams? ___

Write the electronic configuration of the following:1. Na2. Ca2+3. P3−4. F

cooh-cooh decomposes to co + co2 +h2o. cooh-cooh is 10g. Find the mass of co, co2 and h20 using POAC.

Why liquids do not have a definite shape?

Vous êtes dans un restaurant avec votre famille. Écrivez un dialogue. (environ 40 mots)Vous pouvez utiliser les verbes donnés ci-dessous.prendre, préférer, appeler, demander, se dépêcher, payer, donner, apporter, dire, vouloir,manger, boire

A solid that does not dissolve in a solution is termed as:

Explain the colour change of red cabbage extract in presence of a base.

Write the following in the form of a word equation: Sodium hydroxide reacts with calcium bromide to form calcium hydroxide and sodium bromide.In the formula CaBr2 what does Ca stand for and what is its valency?