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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.
| 1051. |
In a workshop, there is a mixture of iron powder and aluminum powder that fabricates metal door and gates. The worker has to separate the aluminum powder from the iron powder so that the powders can be utilized for other functions. What method should the worker use in order to separate the mixture? |
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Answer» In a workshop, there is a mixture of iron powder and aluminum powder that fabricates metal door and gates. The worker has to separate the aluminum powder from the iron powder so that the powders can be utilized for other functions. What method should the worker use in order to separate the mixture? |
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| 1052. |
When we dissolve salt in water, the particles of salt get disappears.where does it go? DOES THE LEVEL OF WATER CHANGE? |
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Answer» When we dissolve salt in water, the particles of salt get disappears.where does it go? DOES THE LEVEL OF WATER CHANGE? |
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| 1053. |
Fill in the blanks We wear clothes for protection against _________ and _________ |
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Answer» Fill in the blanks We wear clothes for protection against _________ and _________ |
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| 1054. |
Talking about teachers among friends. |
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Answer» Talking about teachers among friends. |
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| 1055. |
Question 6How would you confirm that a colourless liquid given to you is pure water? |
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Answer» Question 6 How would you confirm that a colourless liquid given to you is pure water? |
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| 1056. |
The chemical formula for plaster of paris - |
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Answer» The chemical formula for plaster of paris - |
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| 1057. |
Stones can be separated from a bowl of rice using ____________________. |
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Answer» Stones can be separated from a bowl of rice using ____________________. |
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| 1058. |
The non-metal which is a liquid at room temperature is __________. |
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Answer» The non-metal which is a liquid at room temperature is __________. |
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| 1059. |
Match the items of Column A with those of Column B. Sulphur dioxide a 1 Damage ozone layer Carbon dioxide b 2 Reduces the oxygen- carrying capacity of the blood Carbon monoxide c 3 Acid rain Chlorofluoro-carbons d 4 Greenhouse gas |
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Answer» Match the items of Column A with those of Column B.
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| 1060. |
Question 14 Name any two sources which cause air pollution due to suspended particulate matter (SPM). |
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Answer» Question 14 |
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| 1061. |
Which among the following energy conversion takes place while lighting a matchstick? |
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Answer» Which among the following energy conversion takes place while lighting a matchstick? |
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| 1062. |
What are the properties of soaps |
| Answer» What are the properties of soaps | |
| 1063. |
_____ is a combination of two or more different kinds of substances. |
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Answer» _____ is a combination of two or more different kinds of substances. |
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| 1064. |
What do you understand by `structural change’? Explain with examples other than those in the text. |
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Answer» What do
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| 1065. |
Think and write how you will separate a mixture of water, sand, salt and iron filings. You may have to use a method not given in the chapter to separate sand and iron filings. Think−which property of iron can be used for this? |
| Answer» Think and write how you will separate a mixture of water, sand, salt and iron filings. You may have to use a method not given in the chapter to separate sand and iron filings. Think−which property of iron can be used for this? | |
| 1066. |
In a coffee machine, the ground coffee beans are separated from the coffee solution by using a/an ______. |
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Answer» In a coffee machine, the ground coffee beans are separated from the coffee solution by using a/an ______. |
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| 1067. |
Question 9 A piece of iron is heated till it becomes red hot. It then becomes soft and is beaten to the desired shape. What kind of changes are observed in this process; reversible or irreversible? |
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Answer» Question 9 A piece of iron is heated till it becomes red hot. It then becomes soft and is beaten to the desired shape. What kind of changes are observed in this process; reversible or irreversible? |
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| 1068. |
What is the least polluting fuel for the vehicles? |
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Answer» What is the least polluting fuel for the vehicles? |
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| 1069. |
gates, wide, lead, chimney, marigolds, straight |
| Answer» gates, wide, lead, chimney, marigolds, straight | |
| 1070. |
49. Which of the following is soluble in water? (1) Be (2) Sr (3) Mg (4) Ba |
| Answer» 49. Which of the following is soluble in water? (1) Be (2) Sr (3) Mg (4) Ba | |
| 1071. |
Question 47.A sulphate salt of group 2 element of the periodic table is a white, soft substance, which can be moulded into different shapes by making its dough. When this compound is left in the open for some time, it becomes a solid mass and cannot be used for moulding purposes.Identify the sulphate salt and why does it show such a behaviour ?Write down the reaction involved. |
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Answer» Question 47. A sulphate salt of group 2 element of the periodic table is a white, soft substance, which can be moulded into different shapes by making its dough. When this compound is left in the open for some time, it becomes a solid mass and cannot be used for moulding purposes. Identify the sulphate salt and why does it show such a behaviour ? Write down the reaction involved. |
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| 1072. |
500 mg = _____ g |
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Answer» 500 mg = _____ g |
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| 1073. |
Substances expand on heating. Is that a physical change or a chemical change? |
| Answer» Substances expand on heating. Is that a physical change or a chemical change? | |
| 1074. |
Which one of the following process helps in regulating temperature of our body? 1. Filtration 2. Decantation 3. Evaporation 4. Sedimentation 5. None of these |
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Answer» Which one of the following process helps in regulating temperature of our body? 1. Filtration 2. Decantation 3. Evaporation 4. Sedimentation 5. None of these |
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| 1075. |
what is alcohol |
| Answer» what is alcohol | |
| 1076. |
Question 13Mixtures of red chilli powder in water, butter in water, petrol in water and honey in water were given to Radha, Sudha, Sofia and Raveena, respectively. Whose mixture is in solution form? |
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Answer» Question 13 Mixtures of red chilli powder in water, butter in water, petrol in water and honey in water were given to Radha, Sudha, Sofia and Raveena, respectively. Whose mixture is in solution form? |
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| 1077. |
Question 9: What is the name of the process in which a solid gets converted into gas directly? What are the factors on which the rate of evaporation depends? |
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Answer» Question 9:
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| 1078. |
how to find the normality of CuSo4 |
| Answer» how to find the normality of CuSo4 | |
| 1079. |
Look at these objects. Put them into a tub of water. Say which one will float and which one will sink.Discalimer: Kindly refer the textbook for the images. ribbon feather marble leaf stone stick paper straw shoes spoon |
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Answer» Look at these objects. Put them into a tub of water. Say which one will float and which one will sink. Discalimer: Kindly refer the textbook for the images.
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| 1080. |
Question 7If wheat is sown in the kharif season, what would happen? Discuss. |
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Answer» Question 7 If wheat is sown in the kharif season, what would happen? Discuss. |
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| 1081. |
ntwhat is value of n if we consider the combustion of 1 molof liquid ehanol if reactants and products are at 298Kn |
| Answer» ntwhat is value of n if we consider the combustion of 1 molof liquid ehanol if reactants and products are at 298Kn | |
| 1082. |
The latent heat of vapourisation of water at 100 Celcius is 540 cal/g . Calculate the entropy increase when one mole of water at 100 Celcius is evaporated. |
| Answer» The latent heat of vapourisation of water at 100 Celcius is 540 cal/g . Calculate the entropy increase when one mole of water at 100 Celcius is evaporated. | |
| 1083. |
Select the appropriate articles for the blanks. _______ chattering kids did not follow _______ table manners their parents taught them. |
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Answer» Select the appropriate articles for the blanks. _______ chattering kids did not follow _______ table manners their parents taught them. |
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| 1084. |
The intermolecular force and the intermolecular space are responsible for determining the mass of matter. (True/False) |
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Answer» The intermolecular force and the intermolecular space are responsible for determining the mass of matter. (True/False) |
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| 1085. |
Question 15A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him, which he dipped in a particular solution.The bangles sparkled like new but their weight was reduced drastically. The lady was upset but after a futile argument the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used? |
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Answer» Question 15 |
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| 1086. |
In what form water is returned back to the oceans? |
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Answer» In what form water is returned back to the oceans? |
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| 1087. |
Metals reflect light and are good conductors of electricity. |
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Answer» Metals reflect light and are good conductors of electricity. |
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| 1088. |
Which type of change is salt in water?Physical or chemical? |
| Answer» Which type of change is salt in water?Physical or chemical? | |
| 1089. |
45. Iron doesn't react with hot or cold water but still gets rusted . Why? |
| Answer» 45. Iron doesn't react with hot or cold water but still gets rusted . Why? | |
| 1090. |
Question 20Name the process associated with the following(a) Dry ice is kept at room temperature and at one atmospheric pressure.(b) A drop of ink placed on the surface of water contained in a glass spreads throughout the water.(c) A potassium permanganate crystal is in a beaker and water is poured into the beaker with stirring.(d) An acetone bottle is left open and the bottle becomes empty.(e) Milk is churned to separate cream from it.(f) Settling of sand when a mixture of sand and water is left undisturbed for some time.(g) A fine beam of light entering through a small hole in a dark room. Illuminates the particles in its paths. |
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Answer» Question 20 Name the process associated with the following (a) Dry ice is kept at room temperature and at one atmospheric pressure. (b) A drop of ink placed on the surface of water contained in a glass spreads throughout the water. (c) A potassium permanganate crystal is in a beaker and water is poured into the beaker with stirring. (d) An acetone bottle is left open and the bottle becomes empty. (e) Milk is churned to separate cream from it. (f) Settling of sand when a mixture of sand and water is left undisturbed for some time. (g) A fine beam of light entering through a small hole in a dark room. Illuminates the particles in its paths. |
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| 1091. |
Which form of energy does a matchstick contain? |
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Answer» Which form of energy does a matchstick contain? |
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| 1092. |
Describe Lithosphere. |
| Answer» Describe Lithosphere. | |
| 1093. |
Why we cannot use pencil on space |
| Answer» Why we cannot use pencil on space | |
| 1094. |
A reservoir has average surface area of 20km2. Mean rate of inflow is 10 m2/S mean outflow is 15 m2/S rainfall is 10 cm and decrease in storage is 16 Mm2. Assuming surface losses to be 1.8 cm. The value of evaporation in the month of April is ___________cm.23.4 |
Answer» A reservoir has average surface area of 20km2. Mean rate of inflow is 10 m2/S mean outflow is 15 m2/S rainfall is 10 cm and decrease in storage is 16 Mm2. Assuming surface losses to be 1.8 cm. The value of evaporation in the month of April is ___________cm.
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| 1095. |
The picture below depicts the change in phase between two states of matter. Identify the process 'X', by which a gas is converted into its liquid state. |
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Answer» The picture below depicts the change in phase between two states of matter. Identify the process 'X', by which a gas is converted into its liquid state. |
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| 1096. |
Why did early cities mostly developed along the banks of rivers? |
| Answer» Why did early cities mostly developed along the banks of rivers? | |
| 1097. |
tearing of paper is said to be a change that cannot be reversed. Is this statement true or false. |
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Answer» tearing of paper is said to be a change that cannot be reversed. Is this statement true or false. |
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| 1098. |
How can air be called as matter? |
| Answer» How can air be called as matter? | |
| 1099. |
if there is fire on petrol pump why we does not use water to reduce it ? |
| Answer» if there is fire on petrol pump why we does not use water to reduce it ? | |
| 1100. |
Chloroflurocarbons are mainly produced by ________________. |
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Answer» Chloroflurocarbons are mainly produced by ________________. |
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