Description : Give the test that is used to detect borate radical is qualitative analysis.
Last Answer : Give the test that is used to detect borate radical is qualitative analysis.
Description : Which of the statements is not true? (1) K2Cr2O7 solution becomes yellow on increasing the pH beyond 7 (2) On passing H2 S through acidified K2Cr2O7 solution, a milky colour is observed (3) Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis (4) K2Cr2O7 solution in acidic medium is orange
Last Answer : Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis
Description : Assertion :- Equivalent weight of `KMnO_(4)` in acidic medium is `M//5` (M=molecular weight) while in basic medium, it is equal of M/3. Reason :- In a
Last Answer : Assertion :- Equivalent weight of `KMnO_(4)` in acidic medium is `M//5` (M=molecular weight) ... False. D. If both Assertion & Reason are False.
Description : SnO2 forms a positively charged colloidal sol in acidic medium and a negatively charged sol in the basic medium. Why ?
Last Answer : Ans. SnO2 is amphoteric in nature. It reacts with acid eg. HCl to form SnCl4 in the solution. The common Sn4+ ions are adsorbed on the surface of SnO2 particles giving them a positive ... solution. The stannate ions are adsorbed on the surface of SnO2 particles giving them a negative charge.
Description : Methyl orange indicator turns (A) Orange yellow in alkaline medium (B) Orange yellow in acidic medium (C) Colourless in acidic medium (D) Colourless in basic medium
Last Answer : (A) Orange yellow in alkaline medium
Description : Find the total number of acidic radical which produce volatile product with dil HCl : `(i) SO_(4)^(2-) " " (ii) I^(-) " " (iii) NO_(2)^(-) " " (iv) NO
Last Answer : Find the total number of acidic radical which produce volatile product with dil HCl : `(i) SO_(4)^(2-) " " (ii) ... SO_(3)^(2-) " " (vi) HCO_(3)^(-)`
Description : What is qualitative analysis ?
Last Answer : A qualitative analysis is a test by which a compound is made up of what elements or what ingredients are in a mixture or what elements or functional elements are present in an organic compound .
Description : Match the reagent which are used in qualitative analysis of given anions :
Last Answer : Match the reagent which are used in qualitative analysis of given anions :
Description : Match the anions with the changes observed on qualitative analysis :
Last Answer : Match the anions with the changes observed on qualitative analysis :
Description : Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution of that salt, she added silver nitrate.
Last Answer : Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution ... observations and write the chemical reactions involved.
Description : During which stage of Risk planning are risks prioritized based on probability and impact? a. Identify Risks b. Plan Risk responses c. Perform Qualitative risk analysis d. Perform Quantitative risk analysis
Last Answer : c. Perform Qualitative risk analysis
Description : Monte Carlo analysis can help predict the impact of risks on project deliverables. This is an element of one of the tools and techniques of which of the following processes? A. Risk Response Planning B. Quantitative Risk Analysis C. Risk Identification D. Qualitative Risk Analysis
Last Answer : B. Quantitative Risk Analysis
Description : The process of assessing the probability and consequences of identified risks to the project objectives, assigning a risk score to each risk, and creating a list of prioritized risks describes ... Risk Analysis B. Risk Identification C. Qualitative Risk Analysis D. Risk Management Planning
Last Answer : C. Qualitative Risk Analysis
Description : All of the following are true regarding the Qualitative Risk Analysis process except which one? A. Probability and impact and expert interview are used to help correct biases that occur in the data ... of this process used to determine which risks need near-term response plans.
Last Answer : C. Qualitative Risk Analysis is an easy method of determining risk probability and impact that usually takes a good deal of time to perform.
Description : Which of the following processes assesses the likelihood of risk occurrences and their consequences using a numerical rating? A. Qualitative Risk Analysis B. Risk Identification C. Quantitative Risk Analysis D. Risk Response Planning
Last Answer : C. Quantitative Risk Analysis
Description : Which contribute to the success of Mendel? (a) Qualitative analysis of data (b) Observation of distinct inherited traits (c) His knowledge of biology (d) Consideration of one character at one time
Last Answer : (d) Consideration of one character at one time
Description : An approach to location anal on analysis that include includes both qualitative and quantitative considerations is a. locational cost-volume b. factor rating c. transportation model d. assignment assignment method e. make or buy analysis
Last Answer : b. factor rating
Description : Which of the following is a characteristic of qualitative research? a. Design flexibility b. Inductive analysis c. Context sensitivity d. All of the above
Last Answer : d. All of the above
Description : What is a Research Design? (A) A way of conducting research that is not grounded in theory. (B) The choice between using qualitative or quantitative methods. (C) The style in which you present your research ... e.g. a graph. (D) A framework for every stage of the collection and analysis of data.
Last Answer : (D) A framework for every stage of the collection and analysis of data.
Description : The term ‘phenomenology’ is associated with the process of (A) Qualitative Research (B) Analysis of Variance (C) Correlational Study (D) Probability Sampling
Last Answer : (A) Qualitative Research
Description : Statement -1 : Sodium thiosulphate is not prepared by boiling `Na_(2)SO_(3)` with S in acidic medium. Statement -2 : `Na_(2)S_(2)O_(3)+H^(+) to 2Na++H
Last Answer : Statement -1 : Sodium thiosulphate is not prepared by boiling `Na_(2)SO_(3)` with S in acidic medium. Statement ... +H^(+) to 2Na++H_(2)SO_(3)+Sdarr`
Description : Research can be classified as : (A) Basic, Applied and Action Research (B) Quantitative and Qualitative Research (C) Philosophical, Historical, Survey and Experimental Research (D) All the above
Last Answer : Answer: D Classification of Research by Purpose - Basic v/s Applied research - Research and development - Evaluative research Classification of Research by Method - Historical research - Descriptive research - Experimental research
Description : which of the following sulphides cannot be reduced to metal by `H_(2)`at about `1000^(@)`C?
Last Answer : which of the following sulphides cannot be reduced to metal by `H_(2)`at about `1000^(@)`C? A. HgS B. PbS C. `CS_(2)` D. `Bi_(@)S_(3)`
Description : Formation of which of the sulphides is most spontaneous?
Last Answer : Formation of which of the sulphides is most spontaneous? A. HgS B. `Bi_(2)S_(3)` C. PbS D. `Cs_(2)`
Description : Metal sulphides occur mainly in rocks and metal halides in lakes and seas. Explain.
Last Answer : Ans.: Metal halides being soluble in water, get dissolved in rain water and are carried to lakes and seas during weathering of rocks. On the otherhand, metal sulphides being insoluble are left behind in the rocks as residue.
Description : The commonest form of iron & manganese found in ground water as pollutant is in the form of their (A) Carbonates (B) Bi-carbonates (C) Chlorides (D) Sulphides
Last Answer : (B) Bi-carbonates
Description : Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air. (A) Hydrocarbons (B) Hydrogen fluoride (C) Hydrogen sulphides (D) Nitrogen dioxide
Last Answer : (B) Hydrogen fluoride
Description : Which of the following is an yellow pigment? (A) Titanium dioxide (B) Ferrous sulphate (C) Lead chromates (D) Zinc sulphides
Last Answer : (C) Lead chromates
Description : Presence of carbonaceous matter in the sewage (A) Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures (B) Reduces sulphate ions to sulphides causing obnoxious ... quantity of chlorine used for its purification (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Pick up the incorrect statement from the following: (A) Iron salts produce heavy flocks and hence remove more suspended matter (B) Iron salts remove hydrogen sulphides (C) Iron salts can be used over a limited range of pH values (D) Iron salts impart corrosiveness to water
Last Answer : (C) Iron salts can be used over a limited range of pH values
Description : Mathamoglobinemia or blue baby disease is caused due to (A) Chlorides (B) Nitrites (C) Nitrates (D) Sulphides
Last Answer : (C) Nitrates
Description : Root exudates of wheat and oats which has detrimental effects on wild mustard con tain a). Phenolic acid b). Alkaloids c). Sulphides d). Lactones
Last Answer : a). Phenolic acid
Description : When someone receives, say, the Cake in the Frizzer award, is there any way to see a list of folks who have been awarded this, and what the comment was that precipitated it?
Last Answer : If you open the frizzer shell just run away.
Description : If I know, say, the mass of precipitated PbCrO4 when I mixed PbCl2 solution (100mL exact) and K2CrO4 (excess), how would I go about calculating the original concentrations of Pb2+ and Cl- in the original PbCl2 solution?
Last Answer : Are you certain that your answer is incorrect? Ksp=[Pb][CrO4], and as you add K2CrO4, you are increasing the concentration of CrO4 in solution, and the equilibrium position must shift such that the ... wrong. I would be very interested in knowing, given that I take my chemistry AP test on Tuesday.
Description : When a coordination compound CoCl3.6NH3 is mixed with AgNO3, 3 moles of AgCl are precipitated per mole of the compound. Write (i) Structural formula of the complex (ii) IUPAC name of the complex -Chemistry
Last Answer : i) Complex so formed is: CoCl3.6NH3 + AgNO3 → [Co(NH3)6]Cl3 (ii) IUPAC name of complex is: Hexaamminecobalt (III) chloride
Description : When a co-ordination compound CrCl3.6H2O is mixed with AgNO3, 2 moles of AgCl are precipitated per mole of the compound. Write (i) Structural formula of the complex. (ii) IUPAC name of the complex. -Chemistry
Last Answer : (i) The complex formed on mixing a coordination compound CrCl3.6H2O with AgNO3 is as follows CrCl3.6H2O + AgNO3 → [Cr(H2O5)Cl]Cl2. H2O (ii) Pentaaquachloridochromium (III) chloride monohydrate
Description : 0.98 g of the metal sulphate was dissolved in water and excess of barium chloride was added. The precipitated barium sulphate weighted 0.95 g. Calcula
Last Answer : 0.98 g of the metal sulphate was dissolved in water and excess of barium chloride was added. ... 95 g. Calculate the equivalent weight of the metal.
Description : On treatment of 100mL of 0.1 M solution of `CoCl_(3).6H_(2)O` with excess `AgNO_(3),1.2xx10^(22)` ions are precipitated. The complex is :
Last Answer : On treatment of 100mL of 0.1 M solution of `CoCl_(3).6H_(2)O` with excess `AgNO_(3),1.2xx10^(22)` ions are ... `[Co(H_(2)O)_(4)Cl_(2)]Cl.2H_(2)O`
Description : On adding `AgNO_(3)` solution to a solution of `[Pt(NH_(3))_(3)Cl_(3)]Cl`, the percentage of total chloride ion precipitated is
Last Answer : On adding `AgNO_(3)` solution to a solution of `[Pt(NH_(3))_(3)Cl_(3)]Cl`, the percentage of total ... ion precipitated is A. 100 B. 75 C. 50 D. 25
Description : Calcium present with protein is known as free while in salt form is called as (A) Bound (B) Precipitated (C) Solid (D) Polymorphs
Last Answer : Answer : A
Description : Which one of the following statements concerning glucose-6-phosphate dehydrogenase deficiency is correct? (A) Young R.B.Cs, particularly reticulocytes, contain the highest enzyme activity cells show less enzyme ... PD gene (D) G-6-PD deficiency is precipitated by ingestion of drugs such as aspirin
Description : What happens when freshly precipitated Fe (OH)3 is shaken with a little amount of dilute solution of FeCl3 ?
Last Answer : Ans. It causes peptization leading to the formation of a positively charged sol of Fe (OH)3
Description : What will be precipitated by half-saturation of ammonium sulfate?
Last Answer : Globulins are precipitated by half-saturation of ammonium sulfate.
Description : How albumin is precipitated?
Last Answer : By full saturation of ammonium sulfate or 28 % sodium sulfate.
Description : How proteins are precipitated from solution?
Last Answer : Any factor which neutralises the charge or re- moves water of hydration will cause precipita- tion of proteins.
Description : Alkaloids are NOT precipitated by (A) Mayer's reagent (B) Dragendroff Reagent (C) Picric acid (D) Millon's reagent
Last Answer : (D) Millon's reagent
Description : Extracellular polysaccharides in plaque are formed by: A. Bacteria from sucrose B. Precipitated from carbohydrate C. Precipitated from glycoproteins
Last Answer : A. Bacteria from sucrose
Description : A patient of megaloblastic anaemia was treated with oral folic acid 5 mg daily. After 2 weeks he reported back with cognitive deficit, sensory disturbance, depressed knee jerk, while ... therapy has unmasked pyridoxine deficiency D. Patient has folate reductase abnormality in the nervous system
Last Answer : D. Patient has folate reductase abnormality in the nervous system
Description : All of the following are examples of chemically precipitated sedimentary rock except: w) limestone x) sandstone y) dolomite
Last Answer : ANSWER: X -- SANDSTONE