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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.
| 2801. |
Question 37Which has more number of atoms?100g on N2 or 100 g of NH3 |
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Answer» Question 37 Which has more number of atoms? 100g on N2 or 100 g of NH3 |
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| 2802. |
Name the gas formed by the electrolysis of water,also protect their mole ratio? |
| Answer» Name the gas formed by the electrolysis of water,also protect their mole ratio? | |
| 2803. |
373. The halflife period ofa radioactive element X is the sameas the mean life time of another radioactive element Y.Initially both of them have the same number of radioactive(AIEEE, 2007; IIT, 1999)atoms, Thenfa) Ywill decay at a faster rate than X(b) X will decay at a faster rate than YXand Yalways decay at the same rate(c)(d) X and Y have the same decay rate initially |
| Answer» 373. The halflife period ofa radioactive element X is the sameas the mean life time of another radioactive element Y.Initially both of them have the same number of radioactive(AIEEE, 2007; IIT, 1999)atoms, Thenfa) Ywill decay at a faster rate than X(b) X will decay at a faster rate than YXand Yalways decay at the same rate(c)(d) X and Y have the same decay rate initially | |
| 2804. |
What is filature |
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Answer» What is filature |
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| 2805. |
What is an ionic bond? Explain with an example. |
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Answer» What is an ionic bond? Explain with an example. |
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| 2806. |
___ % of oxygen is present in air. |
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Answer» |
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| 2807. |
What is the order of -I effect |
| Answer» What is the order of -I effect | |
| 2808. |
Question 3 Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed (a) Yellow in both acid and base. (b) Yellow in acid and red in base. (c) Pink in acid and yellow in base. (d) Red in acid and blue in base. |
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Answer» Question 3 Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed |
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| 2809. |
The energy stored in food is released during |
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Answer» The energy stored in food is released during |
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| 2810. |
When dilute hydrochloric acid is added to zinc pieces taken in a test tube: |
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Answer» When dilute hydrochloric acid is added to zinc pieces taken in a test tube: |
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| 2811. |
Mention four steps that can be taken to conserve water? [2 MARKS] |
| Answer» Mention four steps that can be taken to conserve water? [2 MARKS] | |
| 2812. |
Q. the ratio of de broglie wavelength of a deuterium atom to that of an particle ,when the velocity of the former is five times greater than that of the later is (a) 4 (b)0.2 (c)2 (d)0.4 (e) 5 |
| Answer» Q. the ratio of de broglie wavelength of a deuterium atom to that of an particle ,when the velocity of the former is five times greater than that of the later is (a) 4 (b)0.2 (c)2 (d)0.4 (e) 5 | |
| 2813. |
The elements whose oxides can turn litmus solution red are: |
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Answer» The elements whose oxides can turn litmus solution red are: |
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| 2814. |
In Froth Floatation process, why does oil form colloid on passing compressed air? |
| Answer» In Froth Floatation process, why does oil form colloid on passing compressed air? | |
| 2815. |
The following figure shows a change. |
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Answer» The following figure shows a
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| 2816. |
Silk is obtained from:a. sheepb. rabbitsc. certain caterpillarsd. bees |
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Answer» Silk is obtained from: a. sheep b. rabbits c. certain caterpillars d. bees |
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| 2817. |
Which elements have molecules with two atoms each? |
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Answer» Which elements have molecules with two atoms each? |
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| 2818. |
Can we prevent rusting by applying a layer of grease on the iron?Why? |
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Answer» Can we prevent rusting by applying a layer of grease on the iron?Why? |
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| 2819. |
Is normal pure drinking water(not exactly distilled) slightly acidic or basic? |
| Answer» Is normal pure drinking water(not exactly distilled) slightly acidic or basic? | |
| 2820. |
How vernier caliper scale works ?? |
| Answer» How vernier caliper scale works ?? | |
| 2821. |
What will be the total number of valence electrons in 4.2 g of N3- ion? |
| Answer» What will be the total number of valence electrons in 4.2 g of N3- ion? | |
| 2822. |
Tall trees which look like roof over other plants in the forest is called __. |
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Answer» Tall trees which look like roof over other plants in the forest is called |
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| 2823. |
Match the following for the flame of a candle. Column A Column B Column C (a) Hottest part (i) Innermost zone of unburnt wax vapors (x) blue (b) Moderately hot (ii) Middle zone of partial combustion (y) black (c) Least hot (iii) Outer zone of complete combustion (z) yellow |
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Answer» Match the following for the flame of a candle.
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| 2824. |
what is the difference between limestone and marble? |
| Answer» what is the difference between limestone and marble? | |
| 2825. |
35. 116 mg of a compound on vaporisation in a Victor Meyer's apparatus displaces 44.8 ml of air measured at STP. The molecular weight of the compound is A. 116 B. 232 C. 58 D. 44.8 |
| Answer» 35. 116 mg of a compound on vaporisation in a Victor Meyer's apparatus displaces 44.8 ml of air measured at STP. The molecular weight of the compound is A. 116 B. 232 C. 58 D. 44.8 | |
| 2826. |
When we move from North to South direction in Africa in which sequence we face various lakes? |
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Answer» When we move from North to South direction in Africa in which sequence we face various lakes? |
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| 2827. |
Name A, B, C, D, E, and F in the following diagram showing the change of states. |
Answer» Name A, B, C, D, E, and F in the following diagram showing the change of states.  |
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| 2828. |
Do acids even react on nonliving things such as taj mahal turned to yellowish from white due to acid rains |
| Answer» Do acids even react on nonliving things such as taj mahal turned to yellowish from white due to acid rains | |
| 2829. |
Which of the following metal prevents corrosion of tin? |
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Answer» Which of the following metal prevents corrosion of tin? |
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| 2830. |
A man runs along a horizontal road holding his umbrella vertical in order to afford maximum protection from rain. The rain is actually : |
| Answer» A man runs along a horizontal road holding his umbrella vertical in order to afford maximum protection from rain. The rain is actually : | |
| 2831. |
A student adds a few drops of the universal indicator solution to a dilute solution of sodium hydrogencarbonate taken in a test-tube. Which of the following colour would he observe?(1) blue(2) green(3) mustard(4) yellow |
Answer» A student adds a few drops of the universal indicator solution to a dilute solution of sodium hydrogencarbonate taken in a test-tube. Which of the following colour would he observe? (1) blue (2) green (3) mustard (4) yellow |
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| 2832. |
Define selective breeding. |
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Answer» Define selective breeding. |
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| 2833. |
Why in the blust furnace is limestone added while manufacturing cast iron in the time of smelting ? |
| Answer» Why in the blust furnace is limestone added while manufacturing cast iron in the time of smelting ? | |
| 2834. |
What is the colour of the sky? What do the clouds bring? |
Answer»
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| 2835. |
what is the chemical formula of acetone |
| Answer» what is the chemical formula of acetone | |
| 2836. |
Sugar+Ethanol= Homogeneous MIxture, but Salt+Ethanol= Heterogeneous Mixture? Why |
| Answer» Sugar+Ethanol= Homogeneous MIxture, but Salt+Ethanol= Heterogeneous Mixture? Why | |
| 2837. |
A particular region in some state of India is observing a constant decrease in the water table. Identify the most probable reason for the same. |
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Answer» A particular region in some state of India is observing a constant decrease in the water table. Identify the most probable reason for the same. |
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| 2838. |
A student mixed some soil with water in a beaker and allowed it to settle. He filtered the contents of the beaker and obtained a clear filtrate. When he put a few drops of the filtrate on the pH paper, the pH paper turned yellowish orange. Which of the following should the student put on this pH paper so that it may change its colour to greenish-blue?(1) NaHCO3 solution(2) HCI solution (3) Vinegar solution (4) Common salt solution |
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Answer» A student mixed some soil with water in a beaker and allowed it to settle. He filtered the contents of the beaker and obtained a clear filtrate. When he put a few drops of the filtrate on the pH paper, the pH paper turned yellowish orange. Which of the following should the student put on this pH paper so that it may change its colour to greenish-blue? (1) NaHCO3 solution (2) HCI solution (3) Vinegar solution (4) Common salt solution |
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| 2839. |
The clinker is formed at a temperature of : |
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Answer» The clinker is formed at a temperature of : |
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| 2840. |
A coating of cobalt that is 0.005 cm thick is deposited on a plate that is 0.5 m^{2 }in total area. How many atoms of cobalt are deposited on the plate ? (Densuty of cobalt = 8.9 g cm^{-3 }, Ato ic mass of Co = 59 amu |
| Answer» A coating of cobalt that is 0.005 cm thick is deposited on a plate that is 0.5 m^{2 }in total area. How many atoms of cobalt are deposited on the plate ? (Densuty of cobalt = 8.9 g cm^{-3 }, Ato ic mass of Co = 59 amu | |
| 2841. |
Q18. Consider the following statements. 1. Arsenic (As) is an odourless and tasteless metalloid widely distributed in the earth’s crust. 2. Arsenic contamination is highly prevalent in Indus river area due to the use of deep tube wells for water supply. 3. The groundwater in these tube wells has high concentrations of arsenic in deeper level. Which of the above statement(s) is/are correct? |
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Answer» Q18. Consider the following statements. 1. Arsenic (As) is an odourless and tasteless metalloid widely distributed in the earth’s crust. 2. Arsenic contamination is highly prevalent in Indus river area due to the use of deep tube wells for water supply. 3. The groundwater in these tube wells has high concentrations of arsenic in deeper level. Which of the above statement(s) is/are correct?
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| 2842. |
Phenolphthalein undergoes a color change with which of the following? |
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Answer» Phenolphthalein undergoes a color change with which of the following? |
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| 2843. |
How the below statement is an incorrect one?The number of moles of the products and the reactants are always equal to each other in any balanced chemical equation. |
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Answer» How the below statement is an incorrect one? The number of moles of the products and the reactants are always equal to each other in any balanced chemical equation. |
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| 2844. |
Describe in detail that how to analyze a given unknown salt ? |
| Answer» Describe in detail that how to analyze a given unknown salt ? | |
| 2845. |
The valency of PO3−4 is |
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Answer» The valency of PO3−4 is |
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| 2846. |
A neutron star with magnetic moment of magnitude m is spinning with angular velocity ω about its magnetic axis. The electromagnetic power P radiated by it is given by μ0^x.m^y.ω^z.c^u, where μ0 and c are the permeability and speed of light in free space, respectively. Find values of x, y, z and u. |
| Answer» A neutron star with magnetic moment of magnitude m is spinning with angular velocity ω about its magnetic axis. The electromagnetic power P radiated by it is given by μ0^x.m^y.ω^z.c^u, where μ0 and c are the permeability and speed of light in free space, respectively. Find values of x, y, z and u. | |
| 2847. |
why we use dilute acids for a reaction ? Is there any reaction where only acid is used instead of dilute acid . |
| Answer» why we use dilute acids for a reaction ? Is there any reaction where only acid is used instead of dilute acid . | |
| 2848. |
Question 8 'Every Drop Counts' is a slogan related to (a) counting of drops of any liquid (b) counting of water drops (c) importance of water (d) importance of counting |
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Answer» Question 8 'Every Drop Counts' is a slogan related to |
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| 2849. |
25. For a reaction A+B to give product the rate of reaction was double when concentration A was double . When concentration of A and B both was double the rate was again double order of reaction w.r.t A and B |
| Answer» 25. For a reaction A+B to give product the rate of reaction was double when concentration A was double . When concentration of A and B both was double the rate was again double order of reaction w.r.t A and B | |
| 2850. |
Which line in the poem suggests that you need a keen eye and a sharp ear to enjoy a meadow? Read aloud the stanza that contains this line. |
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Answer» Which line in the poem
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