This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calcium factor when titration with EDTA 0.01M |
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Answer» The METHOD uses a very large MOLECULE called EDTA which forms a COMPLEX with calcium ions. EDTA stands for ethylenediaminetetraacetic acid. ... As a RESULT, when the calcium ion–PR complex is titrated with EDTA the Ca2+ ions react to form a stronger complex with the EDTAExplanation:mark as BRAINLIEST |
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| 2. |
What is the structural formula for 2-methly-butan-2-ol |
| Answer» TION:here is your ans MATE plz MARK me as BRAINLIST | |
| 3. |
Deliquescence is maximum when options: the temperature is low the atmosphere is humid Both a and b None of these |
| Answer» UR ANSWER MATE......... | |
| 4. |
Which variables are involved by Raoult's to state the Raoult 's law? |
| Answer» EXPLANATION:This observation depends on two variables:the MOLE fraction of the amount of dissolved SOLUTE PRESENT ANDTHE original vapor pressure (pure solvent). | |
| 5. |
Which of the following are elements? There may be more than one correct answer. a Carbon b Nitrogen c Steel d Fluorine Question 2 (1 point) Which of the following are elements? There may be more than one correct answer. a Helium b Water c Oxygen d Air |
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Answer» 1=> CARBON , nitrogen , fluorine2=> HELIUM , OXYGEN EXPLANATION:hope it HELPS you |
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| 6. |
Important questions of chapter acids , bases and salts class 10 |
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Answer» sodium hydroxide INGREDIENTS and PRODUCTS imp TOPIC ph topicindicators |
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| 7. |
In the electrolysis of water: Why Dil. H2SO4 is added during the electrolysis of water. |
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Answer» normally water doesn't contain any charges or ions so when we ADD DIL. H2SO4 it starts conducting ionic charges. so which ELECTROLYSIS of water |
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| 8. |
EXAMPLE: (9) What is weight of available oxygen from a solution of H202, if 20 ml of this solution need 25 ml, iN/20 KMnO4 for complete oxidation? (Ans-0.25) |
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Answer» Yctcitctcigcstfyxefhijjnvjgudrs Syfugubkkoudysrstxtc giguh |
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| 9. |
Plz answer this question guys.... fastlyyyy.... |
| Answer» 2N2 o Explanation:plz MARK me as BRAIN list | |
| 10. |
Α-D (+) glucose and β-D (+) – glucose are (a) Enantiomers (b) Geometrical isomers (c) Anomers (d) Epimers |
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Answer» the ANSWER is GEOMETRICAL ISOMERS |
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| 11. |
Distinction between glucose and fructose can be done by (a) Benedict’s solution (b) Tollen’s reagent (c) Selivanoff’s reagent (d) Fehling solution |
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Answer» Glucose and fructose are SIMPLE sugars. Simple carbohydrates are classified into two types. They are monosaccharide and DISACCHARIDE. Monosaccharides are made of one SUGAR UNIT and are the most basic from sugar.Hope it helps you pls MARK my answer as brainliest. |
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| 12. |
The sugar present in milk is (a) Sucrose (b) Maltose (c) Glucose (d) lactose |
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Answer» tion:Lactose- OPTION d is the answer dear USER.....xDhope it helps you ONE request PLS follow me guy's |
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| 13. |
Which of the following B group vitamins can be stored in our body? [NCERT Exemplar] (a) Vitamin B1 (b) Vitamin B2 (c) Vitamin B6 (d) Vitamin B12 |
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| 14. |
Which of the following reactions of glucose can be explained only by its cyclic structure? [NCERT Exemplar] (a) Glucose forms pentaacetate. (b) Glucose reacts with hydroxylamine to form an oxime. (c) Pentaacetate of glucose does not react with hydroxylamine. (d) Glucose is oxidised by nitric acid to gluconic acid. |
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Answer» (A) GLUCOSE FORMS pentaacetate.Hope it will help yluIf helpful so MARK as brainlist |
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| 15. |
Dinucleotide is obtained by joining two nucleotides together by phosphodiester linkage. Between which carbon atoms of pentose sugars of nucleotides are these linkages present? [NCERT Exemplar] (a) 5’and 3′ (b)1’and 5′ (c) 5′ and 5′ (d) 3′ and 3′ |
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Answer» 5’and 3′Explanation:Dinucleotide is obtained by JOINING two nucleotides together by PHOSPHODIESTER linkage. These linkages are present between 5' and 3' carbon atoms of pentose SUGARS. |
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| 16. |
Each polypeptide in a protein has aminoacids linked with each other in a specific sequence. This sequence of amino acids is said to be __________ . [NCERT Exemplar] (а) primary structure of proteins. (b) secondary structure of proteins. (c) tertiary structure of proteins. (d) quaternary structure of proteins. |
| Answer» PRIMARY structure of proteins...HOPE this helps you plz MARK as brainliest answer #rocket... | |
| 17. |
Nucleic acids are the polymers of __________ . [NCERT Exemplar] (a) Nucleosides (6) Nucleotides (c) Bases (d) Sugars |
| Answer» NUCLIE ACIDS are the POLYMERS of Nucleotids | |
| 18. |
Which of the following acids is a vitamin? [NCERT Exemplar] (a) Aspartic acid (b) Ascorbic acid (c) Adipic acid (d) Saccharic acid |
| Answer» ADIPIC acid EXPLANATION:please MARK as brainliest and FOLLOW me please | |
| 19. |
Proteins are found to have two different types of secondary structures viz. α-helix and β-pIeated sheet structure, α-helix structure of protein is stabilised by : [NCERT Exemplar] (a) Peptide bonds (b) van der Waals forces (c) Hydrogen bonds (d) Dipole-dipole interactions |
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| 20. |
Which of the following pairs represents anomers? [NCERT Exemplar] |
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Answer» the ANSWER is that the GOVERNMENT is not GOING through |
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| 21. |
Which of the following polymer is stored in the liver of animals? [NCERT Exemplar] (a) Amylose (b) Cellulose (c) Amylopectin (d) Glycogen |
| Answer» GLYCOGEN is STORED in the LIVER of ANIMALS. | |
| 22. |
The nucleus of the element E45 and 21 |
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Answer» The NUCLEUS of the element 21e45 contains, CHEMISTRY The nucleus of the element 21 E 45 contains: (1) 45 protons and 21 NEUTRONS (2) 21 protons and 24 neutronsExplanation:Mark me brainliest |
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| 23. |
How much sulphuric acid can be obtained from 5 kg pure sample of Sulphur(S8) |
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Answer» The amount of sulphuric acid OBTAINED from 5 KG PURE sample of sulphur is 15.31 kg. |
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| 24. |
In the electrolysis of water: Why is the gas collected at one electrode is double than the other. |
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Answer» water contains hydrogen and oxygen , its RATIO is 2:1 , THUS hydrogen will get attracted to an electrode which will be DOUBLE of the other electrode containing oxygen PLS mark me as brainliest if u FOUND it helpful |
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| 25. |
Heavy bike pls answer this ? |
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Answer» what do you MEAN by HEAVY bike I was unable to UNDERSTAND your question please EXPLAIN it nicely |
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| 26. |
In the electrolysis of water: Name the gas collected at anode and cathode. |
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Answer» In the ELECTROLYSIS of water, the GAS collected at CATHODE is hydrogen and the gas collected at anode is oxygen. |
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| 27. |
In which of the following reaction O2 is not formed as one of the product |
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Answer» in the PRECIPITATION REACTION no o² is FORMED on PRODUCTS SIDE |
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| 28. |
SOLVE THIS FRIENDS IT IS SO EASY ONLY |
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Answer» pb is reduced,C is oxidisedcu is reduced,zn is oxidisedMn is reduced,H2 is oxidisecu is reduced,H2 is oxidisedfor all their is VICE vesa in oxidising & reducing agent.means which is reduced is oxidising & which is oxidised is reducing agent.B . those reactions in which both oxidation and reduction take place simultaneously are CALLED REDOX reactions.the reactions in which addition of oxygen or removal of hydrogen takes place are called oxidation reaction.the reactions in which addition of hydrogen or removal of oxygen takes place are called reduction reactions. |
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| 29. |
How many nucleons are present in an atom of Nobelium, 254No 102 ? How many electrons are present in the atom ? How many nucleons may be considered as neutrons ? |
| Answer» MASS no. =no. of PROTONS+ no. of NEUTRONS No. of NUCLEONS= no. of protons+no. of neutrons THEREFORE, Mass no.= 254Explanation: | |
| 30. |
Arrange the following halides in the order of increasing SN2 reactivity 1. CH3CH2CH2Br, CH3CH(CH3) CH2Br, CH3CH2CH(Br)CH3, (CH3)3CBr |
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Answer» I can't UNDERSTAND the QUESTION |
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| 31. |
What is volumentric calculation |
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Answer» Volumetric WEIGHT REFERS to the overall size of a parcel and is MEASURED in volumetric kilograms. Volumetric weight can be calculated by multiplying the length,width and HEIGHT of a parcel (in cm ) and dividing that figure by 5000 ( some carriers use a divisor of 4000 ) .Hope it HELPS .Please mark me as brainliest . |
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| 32. |
Glycogen is a branched chain polymer of α-D-glucose units in which chain is formed by C1—C4 glycosidic linkage whereas branching occurs by the formation of C1– C6 glycosidic linkage. Structure of glycogen is similar to __________ . [NCERT Exemplar] (a) Amylose (b) Amylopectin (c) Cellulose (d) Glucose |
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Answer» (C) .. AMYLOPECTIN. (a) AMYLOSE |
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| 33. |
In aqueous solution, an amino acid exist as (a) cation (b) anion (c) zwitter ion (d) neutral molecule |
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Answer» gfrhbghffdssfyuoplndgecgtuhjmb |
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| 34. |
Deficiency of vitamin B, causes the disease (a) convulsions (b) beri beri (c) cheilosis (d) sterility |
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| 35. |
Which one of the following metals is required as cofactor by all enzymes utilizing ATP in phosphate transfer? (a) K (b) Ca (c) He (d) Mg |
| Answer» B is answer of pleased SAY ONE question about the problem pleased say one question about k..ATP transfer | |
| 36. |
Which of the following statements is not correct? (a) Ovalbumin is a simple food reserve in egg white. (b) Blood proteins thrombin and fibrinogen are involved in blood clotting. (c) Denaturation makes the proteins more active. (d) Insulin maintains sugar level in the blood of a human body. |
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| 37. |
Glucose on oxidation with Br2(aq) gives (a) Gluconic acid (b) Tartaric acid (c) Sachharic acid (d) Meso-oxalic acid |
| Answer» HEY UR ANSWER is here !!!! A. GLUCONIC ACID | |
| 38. |
Which of the following is non-reducing sugar? (a) Glucose (b) Sucrose (c) Maltose (d) Lactose |
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| 39. |
A basic amino acid among the following is (a) glycine (b) valine (c) histidine (d) leucine |
| Answer» | |
| 40. |
RNA and DNA are chiral molecules, their chirality is due to (a) chiral bases (b) chiral phosphate units (c) D-sugar component (d) L-sugar component |
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Answer» D-Sugar componentOPTION C IS CORRECTExplanation:Deoxyribose and RIBOSE sugars are D -chiral sugars in DNA and RNA.HOPE IT HELPS YOU....PLEASE MARK ME AS THE BRAINLIEST........ |
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| 41. |
The glycosidic linkage involved in linking the glucose units in amylose part of starch is (a) C1 -C4 β-linkage (b) C1 -C6 α-linkage (c) C1 -C4 α-linkage (d) C1 -C6 β-linkage |
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Answer» (a )c1-c4B-linkage.ok |
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| 42. |
hope the given Chemistry MCQs for Class 12 with Answers Chapter 13 Amines will help you. If you have any query regarding CBSE Class 12 Chemistry Amines MCQs Pdf, drop a comment below and we will get back to you at the earliest. |
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Answer» Glycogen that is KNOWN as animal STARCH STORED in the liver as well as MUSCLES and BRAIN. |
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| 43. |
Give the significance of coupling reaction of aryldiazonium salts. |
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Answer» The most important application of DIAZO coupling reactions is electrophilic AROMATIC substitution of activated benzene DERIVATIVES by diazonium electrophiles. ... Coupling to an activated benzene ring occurs preferentially PARA to the activating group if that location is free.pls mark me down as a brainiest ANSWER!!!! |
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| 44. |
Classify the following as physical or chemical properties;- zinc dissolves in hydrochloric acid with the evolution of hydrogen gas |
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Answer» chemicalExplanation: |
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| 45. |
A) Write the expression for work done in irreversible isothermal expansion of ideal gas |
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Answer» tion: In calculating the work done in an isothermal irreversible process, why do we CONSIDER the EXTERNAL pressure only (using formula: Wext=PextdV) but not the internal pressure? When the system expands, the internal pressure does the positive work, but EVEN in this scenario, we use the EQUATION as MENTIONED above. |
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| 46. |
Identify two factors which influence periodic properties of elements in period and groups?? |
| Answer» MIC radius is ONE such characteristic that TRENDS across a period and down a group of the PERIODIC table. | |
| 47. |
Which indicators gives Meganta or dark pink colour in acidic solutions ? |
| Answer» CHRISTMAS DAY is the FIRST day | |
| 48. |
Which of the following types of compounds will have van't hoff factor=1 |
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Answer» ation that represents van't Hoff GENERAL SOLUTION equation is :1 Verified AnswerPredict WHETHER van't HOff FACTOR (i) is less than one or greater than one in the following:(i) CH 3 COOH dissolved in water(ii) CH 3 |
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| 49. |
Write a chemical reaction in which the iodide ion replaces the diazonium group in a diazonium salt. |
| Answer» DIAMOND SALT is the ANSWER | |