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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. |
Name one metal which is poor conductor of heat |
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Answer» Lead Silver and copper are the two BEST conductors of heat and ELECTRICITY. Lead is the poorest CONDUCTOR of heat. |
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| 2. |
What is cathod rays and canal rays |
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Answer» Explanation: Cathode rays are negatively charged, whereas Canal Rays are POSITIVELY charged. Cathode rays EMANATE from the Cathode, whereas the Canal Rays do not emanate from the Anode, but they FORM from the collision of GAS molecules within the chamber. |
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| 5. |
An open vessel at 127degree is heated to 227 degree.the percentage of air expelled is |
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| 6. |
Atom of an element contains 5 electrons in its valence shell.this element is a major component of air.it exists as a atomic molecule.a)identify the elementb)show the bond formed between the two atoms of this element.c)write the nature of the bond between the two atoms. |
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Answer» Answer:●the element Is nitrogen having atomic no. 7 ●the BOND formed in this molecule is covalent bond.....ACTUALLY three covalent bonds are formed...because it has 5 VALENCE electrons in its valence SHELL and needs 3 more to complete its outer... Explanation: |
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| 7. |
In a test tube A and B mixture of iron and sulphur is taken.Test tube A is heated and test tube B isn't heated.Now,Dilute hydrochloric acid is added in both the test tubes.Write the name of gases produced in each of the test tube and write the identification process for each of them. |
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Answer» When iron and sulphur is HEATED iron sulphide is formed Fes Now when HCL is added to Fes we get the following: 2HCL+Fes= H2S+FeCl2 Here we get Hydrogen sulphide gas. You know, it SMELLS like rotten egg Oho, I got the answer! Here, when we mix iron and sulphur, no reaction takes place without HEATING. Means when HCL is added to the test tube which is not heated,it reacts with the iron to produce Hydrogen gas: 2Hcl+Fe=Fecl2 + H2 Here Hydrogen is PRODUCED Conclusion :two gases produced are hydrogen and hydrogen sulphide Identification process : When we bring a burning candle near the mouth of the test tube, if it burns with a pop sound, then it is hydrogen. |
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| 9. |
Fill in the blanks....1) NaCl के जलीय विलयन की प्रकृति____होती है।2) HCL एवं HNO3____अम्ल के उदाहरण हैं। |
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Answer» 1-basic. 2-aquaregia |
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| 10. |
The number of molecules of waterof crystallization in washing soda |
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Answer» Explanation: |
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| 11. |
Explain the haber's process? |
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Answer» The Haber Process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia. The reaction is reversible and the PRODUCTION of ammonia is EXOTHERMIC. The catalyst is ACTUALLY slightly more COMPLICATED than pure iron. |
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| 12. |
Please answer!!!!!if Ur answer will be useful to me I will mark you as Brilliantist!!!!! |
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| 13. |
Hey guys!!Plz answer this questionHydrogen is a/an(A) Acidic(B) Basic(C) Alkaline(D) Neutral |
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| 14. |
Lewis structure of H2so4 |
Answer» Hey Hi...Explanation: This is your answer...I hope it's HELPS you...Please mark my answer as a brain list answer...I'm from KARNATAKA...ಕನ್ನಡತಿ... |
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| 16. |
Uses of various allotropes |
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Answer» Carbon ALLOTROPES are used widely. The pencil which we use has it's lead made of graphite. ALSO graphite is also used as electrodes in various ELECTROCHEMICAL cells because its a GOOD conductor. Diamond is widely used in jewellery. |
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| 17. |
I wanna know about: the stages of coal formation??? |
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Answer» Answer: 1. mining 2. PURIFYING |
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| 18. |
Who were kalangs what are the required |
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Answer» Answer: ⏩Kalangs were a SKILLED COMMUNITY of woodcutters and shifting CULTIVATORS. They were considered VALUABLE due to their skills that were required to HARVEST teak and engage in other construction activities.⏪ |
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| 19. |
Metals react with water to give____ and hydrogen gas |
Answer» ⏩Metal react with Water to GIVE Metal Oxide and HYDROGEN gas.⏪ |
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| 20. |
29 grams of an unkown gas at 27°c and 6 grams.of H2 at 17°c occupy the same volume at same pressure. Findthe molecular weight of the gas ? |
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Answer» Answer is 138.1g Explanation: Use the CONCEPT of Temperature is directly PROPORTIONAL to no. of moles( SINCE VOLUME and pressure is same) |
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| 21. |
Reaction between ammonium chloride and barium hydroxide |
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Answer» |
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| 23. |
The number of atoms per unit cell of body centred cube is :(a) 1(b) 2(c) 4(d).6 |
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Answer» the NUMBER of ATOMS PER unit cell of body centred CUBE is 2 (b) 2 |
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| 24. |
Define the term 'pH of solution' |
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| 25. |
Transitive property of equality relation with ideal gas law |
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Answer» Answer: ⏩The ideal GAS law, also called the general gas equation, is the equation of state ... Defining the SPECIFIC gas constant Rspecific(R) as the RATIO R/M,. p = ρ R specific T {\displaystyle .⏪ |
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| 26. |
(vii) Name the reagent which on reaction with glucose confirmsthe presence of five hydroxyl groups in glucose :(a) Hydroxyl amine(b) Bromine water(c) Dilute nitric acid(d) Acetic anhydride |
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Answer» Explanation: PRESENCE of five hydroxyl (-OH) groups: On acetylation with acetic anhydride, GLUCOSE gives a pentaacetate. This CONFIRMS that glucosecontains five -OH groups. |
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| 27. |
Magnification value of a convex mirror will bea)zerob)onec)less than one c)more than one |
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| 28. |
CHO represent the functional groupa)estersb)carboxylic acidc)alcoholsd)aldehydes |
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Answer» |
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| 29. |
How to convert n-butane to isobutane? |
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Answer» Answer: n-Butane is converted to isobutane in a continuous isomerization reactor that operates isothermally at 149 ◦C. The FEED to the reactor CONTAINS 93 MOLE% n-butane, 5% isobutane, and 2% HCI at 149 ◦C, and a 40% conversion of n-butane is achieved. please mark it as BRAINLIEST |
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| 30. |
Which of the following are not ionic compoundsa)kclb)Hclc)ccl4d)nacl |
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Answer» c) ccl4 Explanation: because KCL is for Potassium CHLORIDE HCL is for HYDROCHLORIC ACID and NaCl is sodium chloride |
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| 31. |
What happens to the PH when acetic acid is added to sodium bicarbonate |
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Answer» Answer: The neutralization reaction will occur when acetic acid is added to sodium BICARBONATE forming sodium acetate, water and Carbon dioxide. |
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| 32. |
What happens to the level of PH if carbon dioxide is releasing |
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Answer» In contrary, when CO2 levels are low, there is a left shift in the reaction. In that case, the pH increases because of a decrease in the concentration of H+ ions, introducing a state of alkalosis. CO2 also allows for the formation of a buffer system that maintains blood pH in a NORMAL range. please mark it as brainliest |
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| 33. |
What is chemical formula of sodium acetate |
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Answer» Ch3COONa Explanation: |
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| 34. |
Lime water reacts with chlorine to forma)cacl2b)caocl2c)ca(clo3)2d)cao2cl2 |
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Answer» Explanation: Lime REACTS readily with WATER to PRODUCE slaked lime, which is the chemical compound calcium hydroxide. A considerable amount of heat ENERGY is released during this reaction. ... Slaked lime reacts with chlorine gas to produce the bleaching agent calcium HYPOCHLORITE – a common form of 'swimming pool' chlorine. |
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| 35. |
Wayumandal me nitrogen kitana %paya jata hai |
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Answer» Answer: air contains
and other gases in less QUANTITY |
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| 36. |
A house wife separates cream from milk by churning itName the process of separation State principle involved |
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Answer» Centrifugation is the technique used to SEPARATE cream from milk. ... Hence cream cannot be separated from milk using FILTER paper. (ii) The PRINCIPLE is that the when the milk is SPUN rapidly, the denser particles stay at the bottom and lighter particles stay at the top. |
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| 37. |
What is balanced chemical equation? |
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Answer» The REACTION in which the number of atoms of each ELEMENT is equal on the REACTANT side and product side is called BALANCED chemical reaction. Hope it helps.......✌ |
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| 39. |
Calculate Hydrogen ion concentration of vinegar with ph of 4.36. |
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Answer» Answer: 0.4*10^-4 Explanation: PH = 4.36 therefore [ H + ] = 10 ^-pH = 10^ - 4.36 = 10^ -4 * 10^.36
= 1/2.29 * 10^-4
= 0.4 * 10^-4 |
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| 40. |
50 points....,.,.✏,.✏,.,.✏One mole on N2 and O2 each are reacted initially and 0.25 N2 is present at equilibrium.then what is the concentration of No at equilibrium |
Answer» N2 = 0.75O2 = 0.55Explanation: PHOTO attached below....pls mark me as the BRAINLIST... |
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| 42. |
What is sublimate in chemistry |
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Answer» the solid which can UNDERGO sublimation is called SUBLIMATE. I explained you in the shortest possible way. Mark BRAINLIEST |
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| 43. |
Name the process which occurs when drip of dettol is added to water? |
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Answer» Why for u Explanation:Gshshebjsyvbt |
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| 45. |
One mole on N2 and O2 each are reacted initially;and 0.25 N2 is present at equilibrium.then what is the concentration of No at equilibrium(N2+O2--->2No) |
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Answer»
.......s MBA. ....... |
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| 46. |
Explain the diffference between Acid and Base |
Answer» ACID is a kind of chemical compound that when dissolved in water gives a solution with H+ ion activity more than purified water. A base is an aqueous substance that donates electrons, accept protons or RELEASE hydroxide (OH-) ions. An acid is a proton donor. ... On the other hand, the pH VALUE of base is GREATER than 7.0. |
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| 47. |
Example 9.30In the equilibrium mixture, the concentration of hydrogeneach while that of hydrogen iodidure, the concentration of hydrogen and iodine is 0.04 moles peror of hydrogen iodide is 0.08 moles per dm. Find K of the following reactionThH2(g) + 12 g2H1 (g)Given:[H2] = 0.04 mol/ dm3[2] = 0.04 mol/ dm3[HI] = 0.08 mol/dm3K = ? |
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Answer» Explanation: In the equilibrium mixture, the concentration of hydrogen each while that of hydrogen iodid ure, the concentration of hydrogen and iodine is 0.04 moles per or of hydrogen IODIDE is 0.08 moles per dm. Find K of the following reaction Th H2(g) + 12 g 2H1 (g) Given: [H2] = 0.04 MOL/ dm3 [2] = 0.04 mol/ dm3 [HI] = 0.08 mol/dm3 K = ? |
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| 48. |
What is the electronic configuration of cobalt |
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Answer» Answer: [AR] 3d7 4s2 Explanation: ATOMIC number: 27 Symbol: Co |
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| 49. |
Why food particle preferably kept in aluminium foil? |
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Answer» Aluminum FOIL do not corrode in atmosphere even if kept for a LONG time because a protective coating of aluminum oxide (Al2O3) is formed on the surface of the foil and stops any further reaction of the metal with air and water thus food PARTICLES do not GET spoiled. Hope it helps.......✌ |
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