Description : Which of the following is correct? (a) When a Grignard reagent reacts with a ketone, the addition product is a primary alcohol. (b) When a Grignard reagent reacts with a ketone, the addition product ... with a aldehyde, the addition product is a tertiary alcohol. (d) None of the above are correct.
Last Answer : None of the above are correct.
Description : An aldehyde can be oxidized to form: w) a ketone x) an acid y) an alcohol z) an ester
Last Answer : ANSWER: X -- AN ACID
Description : Organic compound (A), C4H8O, does not react with sodium or PCl5. However, it reduces an alkaline solution of a copper (II) salt on heating. Compound (A) could be (a) an aldehyde (b) a primary alcohol (c) a ketone (d) a secondary alcohol
Last Answer : an aldehyde
Description : Ethylmagnesium iodide reacts with formaldehyde to give a product which on acid-hydrolysis forms : (a) an aldehyde (b) a primary alcohol (c) a ketone (d) a secondary alcohol
Last Answer : a primary alcohol
Description : Ketones are prepared by the oxidation of (a) Primary alcohol (b) Secondary alcohol (c) Tertiary alcohol (d) None of these
Last Answer : Secondary alcohol
Description : Ketones react with Grignard reagents to form an addition product which on hydrolysis gives a (a) Primary alcohol (b) Tertiary alcohol (c) Secondary alcohol (d) Ketal
Last Answer : Tertiary alcohol
Description : Which one of the following organic compounds has fruity smell? (1) Alcohol (2) Aldehyde (3) Ester (4) Ether
Last Answer : (3) Ester Explanation: Esters are common in organic chemistry and biological materials, and often have a characteristic pleasant, fruity odour. This leads to their extensive use in the fragrance and ... ester as the reaction product. Esters are widespread in nature and are widely used in industry.
Last Answer : Ester
Description : Oxidation of a secondary alcohol with K2Cr2O7/H+ produces (a) a carboxylic acid (b) a ketone (c) an aldehyde (d) an ester
Last Answer : a ketone
Description : Which of the following is the correct ranking in decreasing order of relative Boiling Point of carbonyl containing compounds? (a) primary amide > carboxylic acid >> ester ~ acyl chloride ~ aldehyde ~ ketone ... chloride ~ amide (d) carboxylic acid > amide >> ester ~ acyl chloride ~ aldehyde ~ ketone
Last Answer : primary amide > carboxylic acid >> ester ~ acyl chloride ~ aldehyde ~ ketone
Description : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary alcohol is known as cannizzaro reaction.
Last Answer : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary ... final product is A. B. C. D.
Last Answer : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary ... C. step III D. step I and II both
Description : The α-Helix is a common form of (a) Primary structure (b) Tertiary structure (c) Secondary structure (d) None of these
Last Answer : Secondary structure
Description : The linear arrangement of amino acid units in proteins is called : (a) primary structure (b) secondary structure (c) tertiary structure (d) quaternary structure
Last Answer : primary structure
Description : Which of the following protein structures does “denaturation” destroy? (a) primary and secondary structures (b) secondary and tertiary structures (c) tertiary and quaternary structures (d) secondary, tertiary, and quaternary structures
Last Answer : secondary, tertiary, and quaternary structures
Description : Which of the following structures can polypeptides have? (a) primary structure (b) secondary structure (c) tertiary structure (d) all of the these
Last Answer : all of the these
Description : Carbylamine test is given by (a) Primary amines (b) Secondary amines (c) Tertiary amines (d) None of these
Last Answer : Primary amines
Description : A nitrile can be made by dehydrating an amide. However, for this reaction to occur, the amide must be : (a) primary (b) secondary (c) tertiary (d) N-methylated
Last Answer : primary
Description : Which type of amine produces N2 when treated with HONO? (a) Primary (b) Secondary (c) Tertiary (d) Quaternary
Last Answer : Primary
Description : How should CH3CHClCH2CH3 be classified? (a) primary alkyl halide (b) secondary alkyl halide (c) tertiary alkyl halide (d) quarternary alkyl halide
Last Answer : secondary alkyl halide
Description : 2-Methyl-2-butene reacts with HBr in the presence of peroxide to give (a) A primary alkyl bromide (b) A secondary alkyl bromide (c) A tertiary alkyl bromide (d) A vicinal dibromide
Last Answer : A secondary alkyl bromide
Description : 2-Methylpropene reacts with HBr in the presence of peroxide to give (a) A primary alkyl bromide (b) A secondary alkyl bromide (c) A tertiary alkyl bromide (d) A vicinal dibromide
Last Answer : A primary alkyl bromide
Description : What type of an alkyl group is an isobutyl group? (a) primary (b) secondary (c) tertiary (d) none of these
Last Answer : none of these
Description : The order of stability of carbanions is (a) primary > secondary > tertiary (b) secondary > tertiary > primary (c) tertiary > secondary > primary (d) tertiary > primary > secondary
Last Answer : primary > secondary > tertiary
Description : The order of stability of carbonium ions is (a) tertiary > secondary > primary (b) secondary > tertiary > primary (c) primary > secondary > tertiary (d) primary > tertiary > secondary
Last Answer : tertiary > secondary > primary
Description : A tertiary alcohol (H) upon acid-catalysed dehydration gives a product (I). Ozonolysis of (I) leads to compounds (J) and (K). Compound (J) upon reacti
Last Answer : A tertiary alcohol (H) upon acid-catalysed dehydration gives a product (I). Ozonolysis of (I) leads to compounds ... ,PhCOCH_(3)` and `PhCOO^(-)K^(+)`
Last Answer : A tertiary alcohol (H) upon acid-catalysed dehydration gives a product (I). Ozonolysis of (I) leads to ... is formed by the reaction of: B. C. D.
Description : (A) Tertiary carbocations are generally formed more easily than primary carbocations. (R) Hyperconjugation as well as inductive effect due to addition
Last Answer : (A) Tertiary carbocations are generally formed more easily than primary carbocations. (R) Hyperconjugation as ... A) is incorrect but (R) is correct.
Description : An organic compound (A), C3H8O, on oxidation gives (B), C3H6O. The compound (A) could be (a) an aldehyde (b) a ketone (c) an alcohol (d) an ester
Last Answer : an alcohol
Description : The appearance of a silver mirror in Tollens' test indicates the presence of : (a) an aldehyde (b) a ketone (c) an alcohol (d) an alkene
Description : A hydrazone will result from the reaction of hydrazine with (a) a phenol (b) an aldehyde (c) an alcohol (d) an acid
Description : . The reduction of cyclohexanone with LiAlH4 (or NaBH4) will give (a) an alcohol (b) an organic acid (c) an aldehyde (d) a hemiketal
Description : 6. Do you think the classification of economic activities into primary, secondary and tertiary is useful? Explain how. -Economics 10th
Last Answer : The classification of economic activities into primary, secondary and tertiary is useful, as it helps to classify the different occupations that are taken up by the people in the country and how much ... the GDP and which sector has the scope to employ more people and increase the National Income.
Description : Distinguish between primary, secondary and tertiary sector. -SST 10th
Last Answer : Primary Sector (i) It is known as agriculture and allied services sector. (ii) This sector produce goods and services by exploiting natural resources. (iii) This sector is unorganised and use ... communication come in this sector. (v) This sector s sharing in the employment is increasing.
Description : What is meant by a primary consumer, secondary consumer and a tertiary consumer ? -SST 10th
Last Answer : Primary consumer-Primary consumers are living organisms that only eat plants i.e. producers. Herbivores/plant eaters are primary consumers. For example-Goat, Rabbit. Secondary consumer-Secondary ... consumers are large carnivores which feed on small carnivores. For example Owl, lion, etc.
Description : Do you think the classification of economic activities into primary, secondary and tertiary is useful ? -SST 10th
Last Answer : 'Yes in my opinion the classification of economic activities into primary, secondary and tertiary sectors is very useful because classification will help us in identifying which activity ... smoothly and for best administration and development, classification of economic activities is necessary.
Description : Explain the primary, secondary and tertiary sectors by giving examples of each. -SST 10th
Last Answer : Primary Sector :- All those economic activities that are undertaken by directly using natural resources are included in primary sector. For example, mining, forestry, fishing, poultry etc. Secondary sector : ... to the market. That will be done by tertiary sector. It is also called service sector.
Description : “When a country develops, the contribution of primary sector declines and that of secondary and tertiary sector increases.” -SST 10th
Last Answer : (i) In the initial stages of development, the primary sector was the most important sector of economic activity. As the methods of farming changed and agriculture sector began to prosper, ... in terms of total production and employment. This is the general pattern observed in developed countries.
Description : Classify the following alcohols as primary, secondary, or tertiary :
Last Answer : Classify the following alcohols as primary, secondary, or tertiary : A. `(CH_(3))_(3)C CH_(2)OH` B. `CH_(3)CH( ... `(CH_(3))_(2)C(OH)CH_(2)CH_(3)` D.
Description : Give 3 methods to distinguish primary amine from secondary and tertiary.
Last Answer : Give 3 methods to distinguish primary amine from secondary and tertiary.
Description : Which one of the following economic sectors is Laxmi related to? (a) Primary (b) Secondary (c) Tertiary (d) Quaternary
Last Answer : Take the case of Laxmi with her two-hectare plot of unirrigated land. The government can spend some ... (b) Secondary (c) Tertiary (d) Quaternary
Description : (i) ……………….. socialization involves intense cultural learning and takes place in childhood. (Secondary / Primary / Tertiary)
Last Answer : Choose the correct alternative and complete the statement : (i) .. socialization involves ... or school. (dependent / formal / egalitarian)
Description : Is a mallard a producer primary consumer secondary consumer or tertiary consumer?
Last Answer : Need answer
Description : In protein structure the α-helix and βpleated sheets are example of (A) Primary structure (B) Secondary structure (C) Tertiary structure (D) Quaternary structure
Last Answer : Answer : B
Description : Protein present in hemoglobin has the structure known as (A) Primary (B) Secondary (C) Tertiary (D) Quarternary
Last Answer : Answer : D
Description : During denaturation of proteins, all of the following are disrupted except (A) Primary structure (B) Secondary structure (C) Tertiary structure (D) Quaternary structure
Description : In proteins the α-helix and β-pleated sheet are examples of (A) Primary structure (B) Secondary structure (C) Tertiary structure (D) Quaternary structure
Description : Production of a commodity mostly through the natural process is an activity of - (1) Primary Sector (2) Secondary Sector (3) Tertiary Sector (4) Technology Sector
Last Answer : (1) Primary Sector Explanation: The primary sector of the economy is the sector of an economy making direct use of natural resources. This includes agriculture, forestry, fishing, mining, and extraction of oil and gas.