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. |
elements W X Y and Z having electric configuration w = 2 8 1 ;X =28 7 Y =2 5 ;Z =1 (1) what type of bond is formed between (a)w and x(b) Y and Z (2)What is formula of the compound formed between(a) X and z (b)w and x |
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| 2. |
#WINDS,STORMS AND CYCLONES-3 |
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Answer» 1) Increases |
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| 3. |
Equations of uniform accelerated motion |
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Answer» V = d/ t where, v = velocity d = displacement t = TIME |
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| 4. |
How many molecules of sulphur are present in 12.8 gram of sulphur |
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Answer» 0.2 MOLECULES |
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| 5. |
Detect elements and the functional group in the given organic compound |
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| 6. |
Density of 2 molal sucrose solution is 1.4 gm/ml at 298 k find osmotic pressure |
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| 7. |
Effect of conc. h2so4 on 4-hydroxycyclohexanecarboxylic acid |
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Answer» HTTPS://www.google.co.in/search?q=gshock+images&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiLxorF8ajcAhXRXysKHSb1CGoQ_AUICigB&biw=1366&bih=662#imgrc=v6JAKOBePNMiBM: |
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| 8. |
Direction of velocity at a point of path |
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Answer» Velocity always changes in CIRCULAR motion and so, direction ALSO changes. Direction will be along the tangent of RADIUS of the circle TOWARDS the direction of motion. Direction of velocity changes every time in a circular way. ... Tangent is a straight line drawn to any point on the orbit. |
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| 9. |
Define arrhenius theory of electrolytic dissociation |
| Answer» ACIDS are substances that DISSOCIATE in water to YIELD electrically charged atoms or molecules, called IONS, one of which is a hydrogen ion (H+), and that bases ionize in water to yield hydroxide ions (OH−). | |
| 10. |
Define: explain why steam at 100 degree c is better for heating purposes than boiling water at 100 degree c |
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Answer» Steam at 100°C acquire latent heat of vaporisation which is about 2260kJ/kg |
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| 11. |
Fruit juice can be concentrate in which evaporator |
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Answer» Fruit juice is processed to remove DEFINED proportion of the neutral water content found in the fruit and PRODUCES a product that is approximately 3 to 7 times more concentrates are able to be stored for LONGER and at more convenient temperatures than not from concentrated fruit juice. This can greatly reduce the coast required for transportation is equivalent volumes of concentrate, which can then be returned to its single strength state by RECONSTITUTING with water once it the final PROCESSING destinations |
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| 12. |
Conversion: ethyl acetoacetate to 2-hexanone or butanoic acid |
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Answer» Malonic ESTER to KETONE CONVERSION |
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| 13. |
Distinguish between : normal elements and inert elements |
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Answer» Normal ELEMENTS can undergo reaction to fullfill their octate and become stable... but inert elements have ALREADY completed OCTET.. so they do not react with any ELEMENT... |
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| 14. |
Chemical formula of sodium chlorate |
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Answer» NACLO3 is the answer |
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| 15. |
Why is it difficult to hold Cooking Pan which is Without Plastic or wooden handle |
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Answer» it is difficult to HOLD cooking pan which is without plastic or WOODEN handle because cooking pan is MADE up of steel that is a conductor of heat and could harm or BURN anyone's hand. |
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| 16. |
Why is graphite used in making electrical cell |
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Answer» Because GRAPHITE is NON CONDUCTOR of ELECTRICITY so it doesn't PASS electricity |
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| 17. |
draw the structure of the major organic product formed in the reaction of 1?methylcyclohexene with bromine in water. |
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Answer» 1,2 DIBROMO CYCLOHEXANE |
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| 18. |
Chemical reaction to prove ammonia contains nitrogen |
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Answer» The formula of AMMONIA is NH3 which it self SIGNIFIES that ammonia has nitrogen in it. |
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| 19. |
Solubility decreases with increasing temperature lead nitrate |
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Answer» Solubility is inversely PROPORTIONAL to TEMPERATURE |
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| 20. |
The solubility of pure nitrogen gas at 25 c and 1 atm pressure is |
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Answer» The solubility of pure nitrogen gas at 25 C and 1 atm is 6.8 X 10^-4 mol/L. What is the concenteration of nitrogen DISSOLVED in WATER under atmospheric CONDITIONS? The partial PRESSURE of nitrogen gas in atmosphere is 0.78 atm. Share with your friends. |
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| 21. |
Carbon atom has the electronic configuration....the spin multiplicity of carbom atom is |
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Answer» Explanation: 1s2 2S2 2P2 is the ELECTRONIC configuration.Spin MULTIPLICITY is +1/2 |
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| 22. |
Difference between strong acids and weak acid with examples reactions |
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Answer» Strong acid MEANS which have heavy REACTION like HCL Sulphuric acid . |
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| 23. |
Electronic configuration of M 3+ is [ Ar]3d10 4s2, it belongs to which block in the periodic table? |
| Answer» P BLOCK.............. | |
| 24. |
Convert the following temperature to kelvin scale (a) 100°c (b) -100°c |
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Answer» K=273+C K=273+100 K=373 AND K=273-100 K=173 |
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| 25. |
Please answer the question I will definitely mark brainliest |
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Answer» ATOMIC number-moseley atomic mass-mendeleev periodic FUNCTION, triads-dobereiner octaves-newlanfs |
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| 26. |
Calculate the wavelength of light required to break the bond between two chlorine atoms |
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Answer» We KNOW that the cl-cl ENERGY is 243kjmol-1. |
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| 27. |
Diffusion of potassium permanganate in water? |
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Answer» Potassium PERMANGANATE PARTICLES RESULTS in the purple colour being equally dispersed throughout the water. The PROCESS appears slow as the dissolved particles COLLIDE with the water molecules and each other, slowing their progres |
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| 28. |
Who was the first scientist to prepare the periodic table??please ans fast.....will definitely mark as brainliest... |
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Answer» First PERIODIC table is prepared by a RUSSIAN chemist DIMITRI MENDELEEV in 1869. |
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| 29. |
Molecular mass of D2???? |
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Answer» Molecular Formula of D2 ( DEUTERIUM, H 2 ) |
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| 30. |
Which group in the modern periodic table contain highly reactive non metals?? |
| Answer» HOLOGEN GROUP which CONTAINS FLUORINE FAMILY. | |
| 31. |
At 0 degree what is the no. of molecules in a flask if at 7.6Ã10^-10mm(hg) pressure the volume of gas is 12 liter |
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Answer» Djxsgvihxyjfikduifuwhkg |
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| 32. |
Electronegativity and electropositivity with reason |
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Answer» The ability of atoms to attract the SHARED pair of electrons in its COMBINED state is CALLED electronegativity. |
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| 33. |
Compare the rates of diffusion of SF6 and SO2 |
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Answer» By using GRAHAM’s law of diffusion, which basically says that the rate of diffusion of a GAS is inversely proportional to the square-root of the MASS of the gas. So , take a ratio and you'll get the ANSWER. It doesn't really |
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| 34. |
What do you mean by saying "1000 atoms thick"? |
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Answer» It means the PARTICULAR METAL has a thickness or WIDTH of 1000 ATOMS..... |
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| 35. |
The elements in the atoms of which the last two shells are incomplete are called ________.please answer fast.... |
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Answer» Incomplete octet. HAPPY to HELP U plz mark as BRAINLIEST |
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| 37. |
Difference between double titration and back titration |
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Answer» In a direct titration, a known excess of reagent that REACTS with ANALYTE is used. The excess is then measured with a SECOND TITRANT. |
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| 38. |
How will you observe that all object around us radiate heat to the surrounding |
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Answer» Actually, heat energy is all around us – in volcanoes, in icebergs and in your body. All matter contains heat energy. Heat energy is the result of the movement of TINY particles called ATOMS, molecules or ions in solids, liquids and gases. Heat energy can be transferred from one object to another. The transfer or flow due to the difference in temperature between the two objects is called heat. For example, an ice cube has heat energy and so does a glass of lemonade. If you put the ice in the lemonade, the lemonade (which is WARMER) will transfer some of its heat energy to the ice. In other words, it will heat up the ice. Eventually, the ice will melt and the lemonade and water from the ice will be the same temperature. This is known as reaching a state of thermal equilibrium. Moving particles Matter is all around you. It is everything in the universe – anything that has both mass and VOLUME and takes up space is matter. Matter EXISTS in different physical forms – solids, liquids and gases. All matter is made of tiny particles called atoms, molecules and ions. These tiny particles are always in motion – either bumping into each other or vibrating back and forth. It is the motion of particles that creates a form of energy called heat (or thermal) energy that is present in all matter. |
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| 39. |
Aliphatic primary amines reaction with nitrous acid mechanism |
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Answer» Nitrous ACID ( HNO2 or HONO ) reacts with aliphatic amines in a fashion that provides a USEFUL test for distinguishing primary, secondary and tertiary amines. 1°-Amines + HONO (cold acidic solution) → Nitrogen Gas EVOLUTION from a CLEAR Solution 2°-Amines + HONO (cold acidic solution) → An Insoluble Oil (N-Nitrosamine) 3°-Amines + HONO (cold acidic solution) → A Clear Solution (Ammonium Salt Formation) Nitrous acid is a Brønsted acid of moderate STRENGTH (pKa = 3.3). |
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| 40. |
An organic compound in the shape of triangular prism |
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Answer» The uniform Polyhedron COMPOUND is a symmetric arrangement of 8 triangular PRISMS alligned in pairs. |
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| 41. |
What is ionization energy and its formulae to find it? |
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Answer» An atom consists of a central nucleus that contains positively charged protons and a number of NEUTRONS specific to the given atom. A number of negatively charged electrons orbit the nucleus at various distances. ... Determine what atom you WANT to USE for calculating the ionization energy. |
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| 42. |
Ammonia is a base but does not contain hydro oxl ions.give reasons. |
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| 43. |
Deciphering the role of curcumin reduces cell proliferation |
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Answer» However, the MECHANISM underlying the anti-cancer EFFECT of curcumin on human osteoclastoma (Giant cell tumor, GCT) CELLS remains unclear. |
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| 44. |
Can a reaction work without catalyst ? yes or no. |
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Answer» YES . catalyst is not compulsory...... Hope it helps you and if it does please mark my answer as the brainliest if you WISH you can BECOME my follower so that I can help you with your DOUBTS |
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| 45. |
What is the state of water at 100 degree Celsius(a) solid(b) liquid(c) vapour(d) liquid and vapour |
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Answer» Heya! |
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| 46. |
Please give me this question answers I want draw the structure of hydronium ion. |
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Answer» HEYAA,,,, ______________________ ☺☺☺ |
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| 47. |
What is the symbol for carbon |
| Answer» C is the SYMBOL for carbon . Atomic NUMBER of carbon is 6 . | |
| 48. |
Which one of the statement is correct(a) at melting point only ice exists(b) at melting point only water exists(c) at melting point both ice & water exists equally proportion only.(d) at melting point both ice and water are present and their mutural ratio goes on changing. |
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Answer» The OPTION ( d ) is correct. |
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| 49. |
A hydrocarbon contain 80 percent of carbon.tge vapour density of compound is 30 molecular formula of compound is |
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Answer» A hydrocarbon contains 80% of carbon. means, mass percentage of C = 80% then mass percentage of H = 20% . find percentage atomic mass ratio, for C ⇒80/12 = 20/3 for H ⇒20/1 = 20 find simple ratio of GIVEN NUMERICAL value. C : H = 20/3 : 20 = 1 : 3 so, empirical FORMULA of hydrogen is as it is given, vapor density of hydrogen is 30. so, molar mass of hydrogen = 2 × vapor density = 2 × 30 = 60 g/mol. now, molecular mass = n × mass of empirical formula 60 = n (12 × 1 + 1 × 3) n = 4 hence, molecular formula of hydrocarbon is |
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| 50. |
How much carbon contain in anthracite coal? |
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Answer» I think 90% to 100% carbon CONTAINS in ANTHRACITE |
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