Top 100+ questions in Education

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Q: Name the compound which shows anti-ferroelectric property.

Name the compound which shows anti-ferroelectric property. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Calculate the mass percentage of benzene `(C_(6)H_(6))` and carbon tetraCHMloride `( C Cl_(4))` if `22g` of benzene is dissoved in `122g` of carbon te

Calculate the mass percentage of benzene (C6H6) and carbon tetraCHMloride (CCl4) if 22g of benzene is ... carbon tetraCHMloride. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Calculate the mole fraction of benzene in solution containing `30%` by mass in carbon tetrachloride.

Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Calculate the molarity of eaCHM of the following solutions `:` `a. 30g` of `Co(NO_(3))_(2).6H_(2)O` in `4.3L` of solution `b. 30mL` of `0.5 M H_(2)SO_

Calculate the molarity of eaCHM of the following solutions : a.30g of Co(NO3)2.6H2O in 4.3L of solution b ... diluted to 500mL . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Calculate the mass of urea `(NH_(2)CONH_(2))` required in making `2.5 kg `of `0.25 `molal aqueous solution.

Calculate the mass of urea (NH2CONH2) required in making 2.5kg of 0.25 molal aqueous solution. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Calculate the `(a)` molality, `(b)` molartiy, and `(c)` mole fraction of `KI` if the density of `20% (` mass `//` mass `)` aqueous `KI` is `1.202 g m

Calculate the (a) molality, (b) molartiy, and (c) mole fraction of KI if the density of 20%( mass / mass ) aqueous KI is 1.202gmL-1 . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: The boiling point of water at `750mm Hg` is `99.63^(@)C`. How muCHM sucrose is to be added to `500 g` of water suCHM that it boils at `100^(@)C`.

The boiling point of water at 750mmHg is 99.63∘C . How muCHM sucrose is to be added to 500g of water suCHM that it boils at 100∘C . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Calculate the mass of ascorbic acid `(` Vitamin `C,C_(6)H_(8)O_(6))` to be dissolved in `75g` of acetic acid to lower its melting poit by `1.5^(@)C. K

Calculate the mass of ascorbic acid ( Vitamin C,C6H8O6) to be dissolved in 75g of acetic acid to lower its melting ... .Kf=3.9Kkgmol-1 Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving `1.0g` of polymer of molar mass `185,000` in `450mL` of water a

Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0g of polymer of molar mass 185 ... at 37∘C . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Define the term solution. How many types of solutions are formed ? Write briefly about eaCHM type with an example.

Define the term solution. How many types of solutions are formed ? Write briefly about eaCHM type with an example. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Suppose a solide solution is formed between two substances, one whose particles are very large and the other whose particles are very small. What kind

Suppose a solide solution is formed between two substances, one whose particles are very large and the other whose ... to be ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Define the following terms `:` `a.` Mole fraction `b.` Molality `c.` Molarity `d. Mass percentage.

Define the following terms : a. Mole fraction b. Molality c. Molarity `d. Mass percentage. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Concentrated nitric acid used in the laboratory work is `68%` nitric acid by mass in aqueous solution. What should be the molaritiy of such a sample o

Concentrated nitric acid used in the laboratory work is 68% nitric acid by mass in aqueous solution. What should be ... 1.504gmL-1 ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: A solution of glucose in water is labelled as `10 "percent" w//w`, what would be the molality and mole fraction of each component in the solution? If

A solution of glucose in water is labelled as 10percentw/w , what would be the molality and mole fraction of each ... of the solution? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Calculate the percentage composition in terms of mass of solution obtained by mixing `300 g` of a `25%` and `400 g` of a `40%` solution by mass.

Calculate the percentage composition in terms of mass of solution obtained by mixing 300g of a 25% and 400g of a 40% solution by mass. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: An antifreeze solution is prepared from `222.6 g` of ethylene glycol `[C_(2)H_(4)(OH)_(2)]` and `200 g` of water. Calculate the molality of the soluti

An antifreeze solution is prepared from 222.6g of ethylene glycol [C2H4(OH)2] and 200g of water. Calculate the ... of the solution? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: A sample of drinking water was found to be severely contaminated with chloroform, `CHCl_(3)`, supposed to be carcinogen. The level of contamination wa

A sample of drinking water was found to be severely contaminated with chloroform, CHCl3 , supposed to be carcinogen. ... water sample. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What role does the molecular interaction play in a solution of alcohol and water ?

What role does the molecular interaction play in a solution of alcohol and water ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: An aqueous solution of `2` per cent `(wt.//wt)` non-volatile solute exerts a pressure of `1.004` bar at the boiling point of the solvent. What is the

An aqueous solution of 2 per cent (wt./wt) non-volatile solute exerts a pressure of 1.004 bar at the boiling ... mass of the solute? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Heptane and octane form an ideal solution. At `373 K`, the vapour pressure of the two liquids are `105.0` kPa and `46.0` kPa, respectively. What will

Heptane and octane form an ideal solution. At 373K , the vapour pressure of the two liquids are 105.0 kPa and ... and 35g of octane ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: The vapour pressure of water is `12.3 kPa` at `300 K`. Calculate vapour pressure of `1` molal solution of a solute in it.

The vapour pressure of water is 12.3kPa at 300K . Calculate vapour pressure of 1 molal solution of a solute in it. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Calculate the mass of a non-volatile solute ( molecular mass `40`) which should be dissolved in `114 g` octane to reduce its vapour pressure to `80%`.

Calculate the mass of a non-volatile solute ( molecular mass 40 ) which should be dissolved in 114g octane to ... pressure to 80% . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: A solution containing `30 g` of a non-volatile solute exactly in `90 g` water has a vapour pressure of `2.8 kPa` at `298 K`. Further `18 g` of water i

A solution containing 30g of a non-volatile solute exactly in 90g water has a vapour pressure of 2.8kPa at 298K. ... of water at 298K. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: A `5%` solution (by mass) of cane sugar in water has freezing point of 271 K. Calculate the freezing point of a 5% glucose (by mass) in water. The fre

A 5% solution (by mass) of cane sugar in water has freezing point of 271 K. Calculate the freezing point of a 5% ... water is 273.15 K. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Two elements `A` and `B` form compounds having molecular formula `AB_(2)` and `AB_(4)`. When dissolved in `20 g` of benzene, `1 g`of `AB_(2)` lowers t

Two elements A and B form compounds having molecular formula AB2 and AB4 . When dissolved in 20g of benzene, 1g of AB2 ... of A and B . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: At `300 K`, `36 g` of glucose present per litre in its solution has an osmotic pressure of `4.98 bar`. If the osmotic pressure of the solution is `1.5

At 300K , 36g of glucose present per litre in its solution has an osmotic pressure of 4.98 ¯ . If the ... would be its concentration? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Based on solute `-` solvent interactions, arrange the following in order of increasing solubility in `n-`octane and explain the result. Cyclohexane, `

Based on solute - solvent interactions, arrange the following in order of increasing solubility in n- octane and ... CHM3OH,CHM3CN . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Among the following compounds, identify whiCHM are insoluble, partially soluble, and highly soluble in water ? `a.` Phenol `b.` Toluene `c.` Formic ac

Among the following compounds, identify whiCHM are insoluble, partially soluble, and highly soluble in water ? a. ... f. Pentanol Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: If the density of some lake water is `1.25 g mL^(-1)` and contains `92g` of `Na^(o+)` ions per `kg` of water, calculate the molality of `Na^(o+)` ions

If the density of some lake water is 1.25gmL-1 and contains 92g of Na⊕ ions per kg of water, calculate the ... Na⊕ ions in the lake. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: If the solubility product of `CuS` is `6xx10^(-16)`, calculate the maximum molarity of `CuS` in aqueous solution.

If the solubility product of CuS is 6×10-16 , calculate the maximum molarity of CuS in aqueous solution. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance