Description : How dissolution takes place by hydrogen bonding?
Last Answer : Ans: Many covalent compounds having hydroxyl group (-OH) in them are dissolved in water. In such compounds hydrogen bonds are formed between the water molecules and solute, which make them soluble in water.
Description : What is dissolution process?
Last Answer : Ans: The process of dissolution a solute in a solvent is called dissolution.
Description : What is colloidal solution?
Last Answer : Ans: A solution in which solute particles are bigger than those present in a true solution and which cannot be filtered id called a colloidal solution.
Description : Define freezing mixture.
Last Answer : Ans: The mixture formed by mixing ice and salt having low temperature, than the freezing point of water is called freezing mixture.
Description : Why ionic compounds are more soluble in water than others?
Last Answer : Ans: As water is a polar compound, so it dissolves ionic compounds in large amounts due to its strong interaction with ions (solute particles).
Description : Why vegetable oil is not soluble in water?
Last Answer : Ans: Water is a polar solvent and will dissolve only polar compounds whereas vegetable oil is non-polar, so as a result these are insoluble in water.
Description : Is there any case in which we cannot make saturated solution?
Last Answer : Ans: Yes, there are such solutions in which a liquid solute is soluble in a liquid solvent in all properties; we cannot make saturated solutions in such case.
Description : Why water is called as “Universal Solvent”?
Last Answer : Ans: Because it can dissolve a lot of things in it, due to presence of strong cohesive forces in it and it’s ability to form H-bonding and hydration with solutes.
Description : Why solubility of gases is lesser in liquids?
Last Answer : Ans: Gas molecules are far apart, so they have weak attractive forces among their own molecules & also have less attraction for solvent molecules as well. So they have lesser solubility in liquids.
Description : Define “ Solution”
Last Answer : A homogenous mixture of different chemical substances, which has uniform chemical properties (composition) throught and shows same physical properties, is called a solution.
Description : Dissolution of Partnership takes place when– (A) A partner misbehaves (B) A partner becomes of unsound mind (C) Business is running at a loss (D) A partner dies
Last Answer : Answer: A partner dies
Description : During the process of hardening of cement, _______ will takes place [ A ] Bleeding [ B ] Segregation [ C ] Hydration [ D ] All the above
Last Answer : [ C ] Hydration
Description : The degree of dissociation of an electrolyte depends on - (1) dilution (2) impurities (3) atmospheric pressure (4) method of dissolution
Last Answer : (1) dilution Explanation: The extent to which an electrolyte dissociates into ions is known as degree of dissociation or ionization and depends upon the following factors: (1) Nature of the electrolyte, (2) Temperature, (3) Dilution, (4) nature of the solvent, and (e) presence of other ions.
Description : The rate at which dissolution occurs is LEAST dependent upon which one of the following factors: w) temperature x) pressure y) solution concentration z) solute surface area
Last Answer : ANSWER: X -- PRESSURE
Description : The degree of dissociation of an electrolyte depends on (1) dilution (2) impurities (3) atmospheric pressure (4) method of dissolution
Last Answer : dilution
Description : When water itself combines chemically with some element or mineral it is called – (1) Carbonation (2) Desilication (3) Hydration (4) Oxidation
Last Answer : (3) Hydration Explanation: When water combines chemically with other elements, the process is called hydration. In organic chemistry, a hydration reaction is a chemical reaction in which a hydroxyl ... runs in a strong acidic, aqueous solution. Hydration leaves the non-water component intact.
Description : Setting of plaster of paris involves – (1) dehydration process (2) hydration to form other hydrates (3) oxidation process (4) reduction process
Last Answer : (2) hydration to form other hydrates Explanation: The setting of plaster of Paris takes place by hydration due to the formation of a solid crystalline hydrate and hardening of Plaster of Paris is ... . A slight expansion takes place in the process and heat is evolved. This process is exothermic.
Description : How does the of Hydration Enthalpy of alkaline earth metals vary & compare it with alkali metals
Last Answer : Ans The hydration enthalpies of alkaline earth metal ions decrease with increase in ionic size down the group. Be2+> Mg2+ > Ca2+ > Sr2+ > Ba2+ The hydration enthalpies of alkaline earth metal ions ... MgCl2 and CaCl2 exist as MgCl2.6H2O and CaCl2· 6H2O while NaCl and KCl do not form such hydrates.
Description : Which alkali metal will have highest hydration enthalpy ?
Last Answer : Ans. Li
Description : What is the major product from the acid-catalyzed hydration of 2-methyl-2- pentene? (a) 2-methylpentane (b) 2-methyl-1-pentanol (c) 2-methyl-2-pentanol (d) 2-methyl-3-pentanol
Last Answer : 2-methyl-2-pentanol
Description : Hydration of 2-methyl-1-propene (with H2O/H2SO4) gives : (a) CH3CH2CH2OH (b) (CH3)3COH (c) CH3CH2CH2CH2OH (d) (CH3)2CHOH
Last Answer : (CH3)3COH
Last Answer : The hydration enthalpies of alkaline earth metal ions decrease with increase in ionic size down the group. Be2+> Mg2+ > Ca2+ > Sr2+ > Ba2+ The hydration enthalpies of alkaline earth metal ... and CaCl2 exist as MgCl2.6H2O and CaCl2· 6H2O while NaCl and KCl do not form such hydrates.
Description : Arrange the first group elements in the decreasing order of Hydration Enthalpy
Last Answer : The hydration enthalpies of alkali metal ions decrease with increase in ionic sizes. Li+ > Na+ > K+ > Rb+ > Cs+
Description : A cobalt chloride solution soaked into a piece of cotton can be used as an indicator for changes in humidity levels. Pink indicates a high-humidity environment and blue a low-humidity environment. What ... the cobalt's waters of hydration. z) This is an illustration of the Schrodinger principle.
Last Answer : ANSWER: Y -- THE LOSS AND READSORPTION OF THE COBALT'S WATERS OF HYDRATION.
Description : What is the term used to describe a compound that contains no water of hydration?
Last Answer : ANSWER: ANHYDROUS
Description : When water itself combines chemically with some element or mineral it is called (1) Carbonation (2) Desilication (3) Hydration (4) Oxidation
Last Answer : Hydration
Description : Setting of plaster of paris involves (1) dehydration process (2) hydration to form other hydrates (3) oxidation process (4) reduction process
Last Answer : hydration to form other hydrates
Description : Cement is made hard with (1) dehydration (2) hydration and dissociation of water (3) Dissociation of water (4) Polymerisation
Last Answer : hydration and dissociation of water
Description : What is formed by dissolution of base or acid in water? -Do You Know?
Last Answer : answer:
Last Answer : According to Section 41 of the Specific Remedies Act.
Description : Ammonium chloride when dissolved in water leads to a cooling sensation. The dissolution of ammonium chloride at constant temperature is accompanied by
Last Answer : Ammonium chloride when dissolved in water leads to a cooling sensation. The dissolution of ammonium ... change in entropy D. No charge in enthalpy
Description : One mole of complex compound `Co(NH_3)_5Cl_3` gives 3 moles of ions on dissolution in water. One mole of same complex reacts with two moles of `AgNO_3
Last Answer : One mole of complex compound `Co(NH_3)_5Cl_3` gives 3 moles of ions on dissolution in water. One mole of same ... [Co(NH_(3))_(3)Cl_(3)].2NH_(3)`
Description : Why does stirring increase the rate of dissolution?
Last Answer : Thr number of collisions between solute and solvent molecules is increased.
Description : Which of the following statements about the presence of gallstones in diabetes patients is/are correct? A. Gallstones occur with the same frequency in diabetes patients as in the ... have prompt elective cholecystectomy, to avoid the complications of acute cholecystitis and gallbladder necrosis.
Last Answer : Answer: E DISCUSSION: Gallstones have been found to be very prevalent in patients with type II (non-insulin-dependent) diabetes mellitus, perhaps related to the dyslipoproteinemia in ... added mortality associated with it. There is no causal relationship between diabetes and pancreatic cancer
Description : Garner Vs. Murray rule applies in case of– (A) Admission of a partner (B) Dissolution of a firm (C) Retirement of a partner (D) Death of a partner
Last Answer : Answer: Dissolution of a firm
Description : Which of the following statements is incorrect about Legislative Council? (1) 1/3rd of its members are elected by local bodies (2) President has the final power to decide about its composition (3) It is not subject to dissolution (4) Minimum strength of Legislative Council cannot be less than 40
Last Answer : (2) President has the final power to decide about its composition Explanation: President does not has the final power to decide about the legislative council composition.
Description : Which of the following is not a constitutional prerogative of the President of India? (1) Returning back an ordinary bill for reconsideration (2) Returning back a money bill for reconsideration (3) Dissolution of Lok Sabha (4) Summoning of the session of the Rajya Sabha
Last Answer : (1) Returning back an ordinary bill for reconsideration Explanation: The states and the Central Government derive power from the constitution of India.
Description : According to our Constitution, the Rajya Sabha - (1) is dissolved once in two years. (2) is dissolved every five years. (3) is dissolved every six years. (4) is not subject of dissolution
Last Answer : (4) is not subject of dissolution Explanation: Rajya Sabha is not a subject of dissolution. Lok Sabha dissolved on every five years.
Description : The discretionary powers of a Governor is limited in – (1) Appointment of Chief Minister (2) Dismissal of the Ministry (3) Dissolution of the Legislative Assembly (4) Assent to Bills
Last Answer : (4) Assent to Bills Explanation: The Sarkaria Commission examined the scope of the discretion of the Governor in relation to assent to the Bills under Article 200 of the Constitution. It viewed ... limited as is obvious by the fact that the Governor cannot withhold assent to a reconsidered Bill.
Description : Sitting of Lok Sabha can be terminated by _______ of the house. (1) Adjournment since die (2) Prorogation (3) Dissolution (4) All of the above
Last Answer : (3) Dissolution Explanation: Sitting of Lok Sabha can be terminated by Adjournment Sine die, prorogation, dissolution of the house.
Description : Which of the following is not a tool of legislative control over administration in India? (1) Dissolution of House (2) Resolutions (3) Questions (4) No Confidence Motion
Last Answer : (1) Dissolution of House Explanation: In any representative democratic state, legislature is the supreme arm of state because it consists of representatives of people. This is why, it exercises control over ... fund, cut motions, appropriation bill, vote on account, vote of debit, money bill, etc.
Description : What is formed by dissolution of base or acid in water?
Last Answer : Exothermic
Description : An example of elution is (A) Separation of uranium oxide from its ore by H2SO4 in a Pachuca tank (B) Separation of sugar from sugar beet by hot water (C) Dissolution of tannin out of tree barks by water (D) Recovery of vegetable oils from seeds
Last Answer : (A) Separation of uranium oxide from its ore by H2SO4 in a Pachuca tank
Description : A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t ... tablet is: (A) 0.54 (B) 1.04 (C) 1.24 (D) 1.94
Last Answer : (C) 1.24
Description : Leaching of coarse solid lumps is also termed as (A) Decoction (B) Dissolution (C) Percolation (D) Agitation and settling
Last Answer : (C) Percolation
Description : Which among the following changes are endothermic in nature (a) decomposition of ferrous sulphate (b) dissolution of ammonium chloride in water (c) both (a) and (b) (d) dilution of hydrochloric acid
Last Answer : (c) both (a) and (b)
Description : The death, or disability of an individual CPA and/or the dissolution and liquidation of a firm or partnership of CPAs shall be reported to the BOA not later than ___ days from the date of such death, dissolution or liquidation. a. 15 b. 30 c. 60 d. 90
Last Answer : 30
Description : What is the other name for “administrative decentralization”? a. Deconcentration b. Suburbanization c. Localization d. Dissolution
Last Answer : a. Deconcentration
Description : Election to constitute a Panchayat should be completed before – (a) Expiration of 6 months from date of its dissolution (b) Expiration of 3 months from date of its dissolution (c) Expiration of 1 year from date of its dissolution (d) Expiration of 2 months from date of its dissolution
Last Answer : (a) Expiration of 6 months from date of its dissolution