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.
| 1901. |
A mixture contains three different substances, X,Y and Z. They are of the same size, cubical in shape and yellow in colour.X particles are heavy, insoluble in water, non-magnetic and contribute 50% of the mixture.Y particles are very light, insoluble in water, non-magnetic and contribute 40% of the mixture.Z particles are iron pieces.Which of the following methods can separate X,Y and Z? |
|
Answer» A mixture contains three different substances, X,Y and Z. They are of the same size, cubical in shape and yellow in colour. |
|
| 1902. |
What is transpiration process in plants? |
|
Answer» What is transpiration process in plants? |
|
| 1903. |
Cotton fibre is separated from seeds by which of the following processes? |
|
Answer» Cotton fibre is separated from seeds by which of the following processes? |
|
| 1904. |
Describe the different ways of making fabric from the fibre. |
|
Answer» Describe the different ways of making fabric from the fibre. |
|
| 1905. |
What do you mean by texture? |
| Answer» What do you mean by texture? | |
| 1906. |
Can a mixture of sawdust and water be separated by sedimentation and decantation? |
| Answer» Can a mixture of sawdust and water be separated by sedimentation and decantation? | |
| 1907. |
Which of these is not a natural fibre?(a) leather(b) jute(c) wool(d) cotton |
|
Answer» Which of these is not a natural fibre? (a) leather (b) jute (c) wool (d) cotton |
|
| 1908. |
Raj's mother served him Horlicks with milk.But there were some particles of Horlicks left un-dissolved, he asked his mother to remove those particles. What method of separation should her mother use? [2 MARKS] |
|
Answer» Raj's mother served him Horlicks with milk.But there were some particles of Horlicks left un-dissolved, he asked his mother to remove those particles. What method of separation should her mother use? [2 MARKS] |
|
| 1909. |
Question 2: Is printing a reversible or an irreversible change? |
|
Answer» Question 2: Is printing a reversible or an irreversible change? |
|
| 1910. |
Which type of change involves formation of new substances? |
|
Answer» Which type of change involves formation of new substances? |
|
| 1911. |
Why is ozone layer called ozone umbrella/shield? What would be the effects on widening of ozone hole? |
| Answer» Why is ozone layer called ozone umbrella/shield? What would be the effects on widening of ozone hole? | |
| 1912. |
Which living organism help to maintain a constant level of oxygen in the air? |
| Answer» Which living organism help to maintain a constant level of oxygen in the air? | |
| 1913. |
A small amount of mass m of water at a temperature theta is poured on to a large mass M of ice which is at its melting point. If c is the specific heat capacity of water and L is the specific latent heat of fusion of ice, then the mass of the ice that melts is given by: |
| Answer» A small amount of mass m of water at a temperature theta is poured on to a large mass M of ice which is at its melting point. If c is the specific heat capacity of water and L is the specific latent heat of fusion of ice, then the mass of the ice that melts is given by: | |
| 1914. |
Sam was impressed by John's quick answer and asked him another question somewhat related to the previous question itself.Sam: John, now that you know so much about air around us, can you tell us which components of air is harmful for living beings?John: I am not exactly sure about this, Kenneth, please help me answer this.Kenneth: Oh yes, I can surely help you answer this question.What was Kenneth's answer? |
|
Answer» Sam was impressed by John's quick answer and asked him another question somewhat related to the previous question itself. Sam: John, now that you know so much about air around us, can you tell us which components of air is harmful for living beings? John: I am not exactly sure about this, Kenneth, please help me answer this. Kenneth: Oh yes, I can surely help you answer this question. What was Kenneth's answer? |
|
| 1915. |
Shreya drops a vase of flowers and glass pieces scatters all over the floor. Is this change reversible? |
|
Answer» Shreya drops a vase of flowers and glass pieces scatters all over the floor. Is this change reversible? |
|
| 1916. |
Can the cutting of wood be represented as physical change and burning of wood as chemical change? |
| Answer» Can the cutting of wood be represented as physical change and burning of wood as chemical change? | |
| 1917. |
Characteristics of ADNA |
| Answer» Characteristics of ADNA | |
| 1918. |
Take a cooled bottle of water from the refrigerator and keep it on a table. After some time you notice a puddle of water around it. Why? |
|
Answer» Take a cooled bottle of water from the refrigerator and keep it on a table. After some time you notice a puddle of water around it. Why? |
|
| 1919. |
blow breeze chanced kite sit |
| Answer» blow breeze chanced kite sit | |
| 1920. |
Give two examples of objects that allow light to pass through but not enough for you to see through them clearly. |
| Answer» Give two examples of objects that allow light to pass through but not enough for you to see through them clearly. | |
| 1921. |
36.A slab consists of two parallel layers of copper and brass of same thickness and having thermal conductivity in the ratio 4:1 if the free face of brass is at 100'C and that of copper at 0'C the temperature of interface is |
| Answer» 36.A slab consists of two parallel layers of copper and brass of same thickness and having thermal conductivity in the ratio 4:1 if the free face of brass is at 100'C and that of copper at 0'C the temperature of interface is | |
| 1922. |
Who was Kalu? Who was Appu? Where was Kalu's shop? What trick did Kalu play on Appu? How did Kalu's clothes become wet? |
Answer»
|
|
| 1923. |
Question 1 (j)Which separation techniques will you apply for the separation of the following?j. Fine mud particles suspended in water |
|
Answer» Question 1 (j) Which separation techniques will you apply for the separation of the following? j. Fine mud particles suspended in water |
|
| 1924. |
Why is it necessary to harvest rainwater? |
|
Answer» Why is it necessary to harvest rainwater? |
|
| 1925. |
Is tearing of paper a reversible change or irreversible change |
|
Answer» Is tearing of paper a reversible change or irreversible change |
|
| 1926. |
Explain the meanings of malleable and ductile. |
|
Answer» Explain the meanings of malleable and ductile. |
|
| 1927. |
In separating stones, the need for handpicking them from rice is : |
|
Answer» In separating stones, the need for handpicking them from rice is : |
|
| 1928. |
What is the basis of division of atmosphere? |
| Answer» What is the basis of division of atmosphere? | |
| 1929. |
You accidentally dropped your favourite toy and broke it. This is a change you did not want. Can this change be reversed? |
|
Answer» You accidentally dropped your favourite toy and broke it. This is a change you did not want. Can this change be reversed? |
|
| 1930. |
Which of the following materials were used by the ancient people for making clothes? |
|
Answer» Which of the following materials were used by the ancient people for making clothes? |
|
| 1931. |
Suggest various ways by which water pollution can be controlled. |
|
Answer» Suggest various ways by which water pollution can be controlled. |
|
| 1932. |
Explain the process of rooftop rainwater harvesting with the help of a suitable diagram. |
|
Answer» Explain the process of rooftop rainwater harvesting with the help of a suitable diagram. |
|
| 1933. |
Why do we need to separate different components of a mixture? Give two examples. |
|
Answer» Why do we need to separate different components of a mixture? Give two examples. |
|
| 1934. |
Despite being very useful it is advised to restrict the use of plastic. Why is it so? Can you suggest some methods to limit its consumption? |
|
Answer» Despite being very useful it is advised to restrict the use of plastic. Why is it so? Can you suggest some methods to limit its consumption? |
|
| 1935. |
Question 18 Water, as .... goes into the atmosphere by the process of .... and .... and it forms ......, which on condensation falls in the form of ...and ... |
|
Answer» Question 18 Water, as .... goes into the atmosphere by the process of .... and .... and it forms ......, which on condensation falls in the form of ...and ... |
|
| 1936. |
Question 3 (b) Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution). b. Pragya makes a saturated solution of potassium chloride in water at 353 K and leaves the solution to cool at room temperature. What would she observe as the solution cools? Explain. |
|
Answer» Question 3 (b) Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution).  b. Pragya makes a saturated solution of potassium chloride in water at 353 K and leaves the solution to cool at room temperature. What would she observe as the solution cools? Explain. |
|
| 1937. |
A. What are reversible and irreversible changes? Give one example for each. [2]B. What do you observe when a little amount of curd is added to a bowl containing warm milk and kept for five hours? [2]C. Why is evaporation faster in the case of a china dish than a test tube? [3]D. A burning candle shows both physical and chemical changes. Explain. [3] |
|
Answer» A. What are reversible and irreversible changes? Give one example for each. [2] B. What do you observe when a little amount of curd is added to a bowl containing warm milk and kept for five hours? [2] C. Why is evaporation faster in the case of a china dish than a test tube? [3] D. A burning candle shows both physical and chemical changes. Explain. [3] |
|
| 1938. |
Light white flakes falling on the ground which is a frozen form of water vapour is called ___. |
|
Answer» Light white flakes falling on the ground which is a frozen form of water vapour is called |
|
| 1939. |
Is the process of respiration an exothermic or endothermic process? |
|
Answer» Is the process of respiration an exothermic or endothermic process? |
|
| 1940. |
Characteristics properties of mixtures. |
| Answer» Characteristics properties of mixtures. | |
| 1941. |
B and Al belong to the same group, but the natureof oxides formed by them are different, whereas Be and Al form same type of oxides although they belong to different groups. Comment. |
| Answer» B and Al belong to the same group, but the natureof oxides formed by them are different, whereas Be and Al form same type of oxides although they belong to different groups. Comment. | |
| 1942. |
24.Is it is wright that a pure substance is a substance which is made of same kind of atom or molecule. Is it wright definition of pure substance if not why? |
| Answer» 24.Is it is wright that a pure substance is a substance which is made of same kind of atom or molecule. Is it wright definition of pure substance if not why? | |
| 1943. |
WHAT IS TANGENIAL VELOCITY |
| Answer» WHAT IS TANGENIAL VELOCITY | |
| 1944. |
Question 2(a) What are insoluble substances?(b) Name a few solid substances that are insoluble in water.(c) Name a few liquid substances that are insoluble in water. |
|
Answer» Question 2 (a) What are insoluble substances? (b) Name a few solid substances that are insoluble in water. (c) Name a few liquid substances that are insoluble in water. |
|
| 1945. |
Among the following fibres, the fibres that are obtained from plants are: |
|
Answer» Among the following fibres, the fibres that are obtained from plants are: |
|
| 1946. |
How will you separate common salt, sand and iron fillings from their mixture? |
| Answer» How will you separate common salt, sand and iron fillings from their mixture? | |
| 1947. |
Question 5Which of the following are homogeneous in nature?(i) Ice (ii) Wood(iii) Soil(iv) Air(a) (i) and (iii)(b) (ii) and (iv)(c) (i) and (iv)(d) (iii) and (iv) |
|
Answer» Question 5 Which of the following are homogeneous in nature? (i) Ice (ii) Wood (iii) Soil (iv) Air (a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (iv) (d) (iii) and (iv) |
|
| 1948. |
What do you mean by opaque, transparent and translucent objects? Give one example for each of them. |
|
Answer» What do you mean by opaque, transparent and translucent objects? Give one example for each of them. |
|
| 1949. |
Question 17 Why is there a need for conserving water? Give two reasons. |
|
Answer» Question 17 Why is there a need for conserving water? Give two reasons. |
|
| 1950. |
Why is the atmosphere essential for life? |
|
Answer» Why is the atmosphere essential for life? |
|