Saved Bookmarks
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. |
Why are lysosome called sucide bag |
|
Answer» Answer: Lysosome is KNOWN as the suicide bag because in the TIME of EMERGENCY it BURST and destroy whole cell. |
|
| 2. |
A white substance "X" on heating in air forms brown fumes "Y" leaving behind a residue. Name X and Y |
|
Answer» Answer: the white SUBSTANCE is lead nitrate when it burns in air it gives BROWN FUMES of nitrogen Explanation: (pbno3)2- pbo+no2+o2 |
|
| 3. |
A piece of metal 3 inch long what is its length in cm |
|
Answer» Answer: 7.62 Explanation: 2.54×3 then we GET 7.62.. |
|
| 4. |
What is difference between inorganic and organic chemistry? |
| Answer» | |
| 5. |
Valency and atomicity of calcium, hydrogen, nitrogen, oxygen, chlorine, carbon, phosphorus and sulphur |
|
Answer» what can I do for all ITEMS |
|
| 6. |
What do you mean by the term 'the scale of the map |
|
Answer» Answer: Map scale refers to the RELATIONSHIP (or ratio) between DISTANCE on a map and the CORRESPONDING distance on the ground. For example, on a 1:100000 scale map, 1cm on the map EQUALS 1km on the ground |
|
| 8. |
What are the all states of matter other than solid,gas and liquid |
|
Answer» Plasma Bose EINSTEIN CONDENSATE |
|
| 9. |
how many grams of HCL will react with 10gram of CACO3 to produce 11.1gram CACL2.1.8gram water and 4.4gram CO2 options are 7.3g,10g,20g and 36.5g |
|
Answer» Answer: 7.3 grams apply law of conservation of MASS it was an easy ONE! |
|
| 10. |
How Wood is renewable source of energy justify your answer |
|
Answer» Wood is technically a RENEWABLE source of ENERGY, since it is a FORM of biomass. ...........However we should note that wood cannot be replenished as fast as it is consumed in the modern INDUSTRIAL world, and the combustion of wood creates different by products than when it naturally DECOMPOSES. I Hope......... it's help you ........... |
|
| 11. |
Why are chemical reactionon in solid state do not take place |
|
Answer» Answer: because it is insolid STATE and it's PARTICLES are closely packed as they don't have property of chemical REACTION |
|
| 13. |
The chemical reaction occurs during photosynthesis is _____________.a.Co2 is reduced and water is oxidizedb.Water is reduced and co2is oxidizedc.Both co2 and water are oxidizedd.Both co2 and water are produced |
|
Answer» A because WATER loses ELECTRON and CARBON DIOXIDE GAINS electron |
|
| 14. |
What happens when potassium iodide is added to lead acetate? |
|
Answer» The PRECIPITATE FORMED will SETTLED down because of its HEAVINESS... |
|
| 15. |
What is chlorine size in composition with neighbouring elements? |
|
Answer» Explanation: Clorine is an element having ATOMIC NUMBER 17 and its mass is 35. In the period of the modern periodic table, we OBSERVE that Argon is next to clorine. The size of Argon is LARGER than that of clorine. The major REASON behind this is the phenomenon of Interelectronic repulsion. The size of Argon atoms is more as it is stable than Clorine. This is the size of clorine with respect to other neighbouring elements. |
|
| 16. |
What happens when rbcs are placed in 0.1% nacl solution? |
|
Answer» Answer: when RBCS are PLACED in 0.1 %NaCl solution then they burst. Explanation: 0.66 % NaCl solution with respect to RBCs is HYPOTONIC and hence 0.1 % is even less . Therefore endosmosis takes PACE and RBCs swells up and finally bursts.(haemolysis occurs) |
|
| 17. |
To determine the structural formula of alkynes |
| Answer» | |
| 18. |
Heya answer this↕️↕️↕️WHAT IS THE RELATION BETWEEN MOLARITY AND NORMALITY......ANSWER SOON |
|
Answer» Bothmolarity and normality are MEASURES of concentration. One is a measure of the NUMBER of moles per liter of solution and the other changes depending on the solution's ROLE in the reaction..... |
|
| 19. |
what mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313 k |
|
Answer» Answer: 31 grams of potassium nitrate will form a SATURATED solution with 50 grams of WATER at 313 Kelvin. Explanation: So you have the given mass of water and that's 50 grams. So SINCE it is just the half of 100 grams the amount of potassium nitrate required will be the half of 62, which equals to 31 grams. And there's your answer. |
|
| 20. |
Basics of organic chemistry for 12th |
|
Answer» STUDY of HALOALKANES ,PREPARATION, properties.some rxns |
|
| 21. |
State the limitations of a balanced chemical equation |
|
Answer» the chemical reaction suffersfrom a number of limitations and THUS have a few drawbacks also. The physical state of reactants and products. The CONDITION such as TEMPERATURE, pressure or catalyst etc. which affect the reaction. |
|
| 22. |
10 examples of suspension solution plzz help me |
|
Answer» WATER ,RUBBING alchole,sugar solution,any juice , SALT solution,carbonate beverage,liquid dishwash,bleach, |
|
| 23. |
Explain the process of getting wool fabric from fibre |
|
Answer» The MAJOR steps NECESSARY to procces wool from the sheep to the fabric are : shearing, cleaning, scouring, grading and sorting,carding, SPINNING and finishing. |
|
| 24. |
5. A sample of a mixture of Na.CO, and NaHCO3is subjected to heating till there is no further lossin weight. Assuming that the loss in weight of thesample is 22% of the initial weight of the mixturedue to the evolution of CO, find out the relativepercentages of the two components in the mixture. |
|
Answer» hhahhahahahahahaaha |
|
| 25. |
Prove that particles of matter are very very small |
| Answer» | |
| 26. |
Importance of environmental chemistry to humans |
Answer» hiBUDDY ✌️✌️✌️✌️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️ Environmental chemists work in a VARIETY of public, private and GOVERNMENT laboratories.Environmental chemistry is socially important because it deals with the environmental impact of pollutants, the reduction of contamination and management of the environment. ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️ Brain LIST pls❤️❤️❤️@toshika#follow me# |
|
| 27. |
In which of the following transitionwill the wavelength be minimum. |
| Answer» | |
| 28. |
WHAT HAPPENED TO MUD IN MUDDY WATER AFTER ADDING ALUM |
|
Answer» Explanation: adding alum in WATER treatment process HELP in FASTER settling of suspended particles and in settling tank if dosed PRIOR to filtration,it helps in arresting suspended particles in filter. this is called as coagulation |
|
| 29. |
What is the relationship between the molecular mass and the molar mass of a substance? |
|
Answer» Explanation: when MOLECULAR masses are expressed in GRAMS then they BECOME molar masses. |
|
| 30. |
What do you mean by liquefaction in ground improvement? |
|
Answer» Answer: Liquefaction refers to a phenomenon where saturated, loose, cohesionless SOILS LOSE STRENGTH due to earthquake ground motion, often resulting in severe damage to overlying STRUCTURES. Whether planned or EXISTING structures, Hayward Baker can provide a liquefaction mitigation solution for your project. |
|
| 31. |
during summer water kept in an earthen pot becomes cool after sometime which phenomenon leads to the cooling of the water in the earthen pot |
|
Answer» evaporation Explanation: |
|
| 32. |
Find the total number of atom in 33.6L of CO2 gas at STP |
|
Answer» my friend MULTIPLE it with avogrado NUMBER but REMEMBER it in mind all quantity are must be in S I |
|
| 33. |
For a hydrogen atom 12.8 ev energy is given whose electron is present in ground state then calculate radius of its excited state orbit. |
|
Answer» For a hydrogen atom 12.8 EV energy is GIVEN whose electron is present in ground state then calculate radius of its excited state orbit. Explanation: please please select this answer was to you please it is my REQUEST I get 1 released please please get one brainliest please please please I am EXPORT but I get one Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please Please |
|
| 34. |
Ammonium dichromate on heating observations |
|
Answer» Ammonium DICHROMATE DECOMPOSES easily on heating. It produces nitrogen gas, WATER vapor and solid chromium oxide. (NH4)2Cr2O7 --------> N2 + Cr2O3 + 4H2O |
|
| 35. |
Write 20 skeletal equations and balance them |
|
Answer» Answer: Your half answer in attachment :) Explanation: NAH2PO4 -> NaPO3 + H2OH2CO3 -> H2O + CO2BaSO4 + H2SO4 -> Ba(HSO4)2CaCO3 -> CaO + CO2CaO + H2O -> Ca(OH)2H2SO3 -> H2O + SO2H3PO4 + Ca(OH)2 -> CaHPO4.2H2ONaPO3 + CuO -> NaCuPO4SO3 + H2O -> H2SO4Be(OH)2 -> BEO + H2OBaO + H2O -> Ba(OH)2Na2SO3 + S -> Na2S2O3SO2 + H2O -> H2SO3Li2O + H2O -> LiOHNa2HPO4 -> Na4P2O7 + H2OH4As2O7 -> As2O5 + H2OCaC2 + N2 -> CaCN2 + CMg(OH)2 -> (MgOH)2O + H2OHAsO3 -> As2O5 + H2OKHSO4 -> K2S2O7 + H2OH3PO4 -> H4P2O7 + H2ONaCl + NH4HCO3 -> NaHCO3 + NH4ClHAsO2 -> As2O3 + H2OUO3 + H2 -> UO2 + H2OCdSO4 + H2S -> CdS + H2SO4 |
|
| 36. |
What is meant by a chemical reaction |
|
Answer» Explanation: a PROCESS that involves rearrangement of the molecular or ionic STRUCTURE of a substance, as DISTINCT from a change in PHYSICAL form or a nuclear reaction. mark it as a brainliest answer please |
|
| 37. |
Is the myth about diamond is true that if we will put diamond in our mouth then we will die is it true? |
|
Answer» Answer: HEY MATE HERE IS THE ANSWER HOPE IT HELPS U Explanation: You can not die if you try to lick a diamond. However, a person may die if he SWALLOWS a diamond because a diamond is very hard. This can happen because the diamond has sharp edges and can CUT some part of the intestine in the stomach. Diamonds do not emit toxically or release toxic substances. MARK MY ANSWER AS BRAINLIEST AND I WILL FOLLOW U PLEASE XD |
|
| 38. |
Metals on heating or burning produce ---------- of metals |
|
Answer» Metals on HEATING or burning PRODUCE OXIDE of metals. Hope It Helps!!! |
|
| 39. |
Water as ice has a cooling effect but water vas steam cause swear burns explain these observations |
|
Answer» When water as ice it is in solid shape When ice as water it is in LIQUID shape |
|
| 40. |
What is the difference between 0.006g and 6.00*10^-3g ? |
| Answer» | |
| 41. |
State the two important experimental results (and the names of the responsible scientists) which enabled the mass of the electron to be determined. |
|
Answer» ROBERT hook Explanation: he DISCOVERED CELL from the BARK |
|
| 42. |
What distinguishes atoms of different elements? |
|
Answer» by through their DIFFERENT PHYSICAL and CHEMICAL PROPERTIES |
|
| 43. |
When a solid changes directly into a gas it is called? |
|
Answer» When a solid CHANGES DIRECTLY into a gas it is called SUBLIMATION... |
|
| 44. |
Arrange the following in order of force of attraction: water ,copper, crystals and carbon-dioxide |
| Answer» | |
| 45. |
Which is the hardest substance present on the earth |
| Answer» | |
| 46. |
what is the colour of Residue when crystals of light green iron sulphate are heated in a hard glass test tube |
| Answer» | |
| 47. |
among the following pairs which contains a neutral and an amphoteric oxide is options are co2 and no,no and zno,so2 and co2 ,co and co2 |
|
Answer» Hêy Fríèñd... Here is the Answer.... The neutral OXIDES are : - • CO • NO AMPHOTERIC oxides are :- • ZNO . So The Correct Option (pair) is NO and ZNO . . . . I Hope This Will Help You◉‿◉ |
|
| 48. |
IBr7 doesn't exist but IF7 exist why? |
|
Answer» Answer: HERE"S THE ANSWER ! FLUORINE IS THE MOST ELECTRONEGATIVE ELEMENT IN THE PERIODIC TABLE. HENCE IT CAN FORM BONDS WITH NOBLE GAS CONFIGURATION OF IODINE (IF₇) BUT CHLORINE, THOUGH HIGHLY ELECTRONEGATIVE, iS NOT HIGHLY ELECTRONEGATIVE ENOUGH TO FORM NOBLE GAS IODINE (ICL₇) ......and HENCE ICL₇ does not EXIST
|
|
| 49. |
What's an atomic number? |
|
Answer» Heyamate!! ✶⊶⊷⊶⊷⊷⊶⊷ ❍⊷⊶⊷⊶⊷⊶⊷✶ Atomic number of the element is described as the number of the PROTON or the number of the electron PRESENT in the atom. It is usually DENOTED by the Z. The atomic number of the HYDROGEN is 1. ✶⊶⊷⊶⊷⊷⊶⊷ ❍⊷⊶⊷⊶⊷⊶⊷✶ ⍖━━━━━━━━━━⍖ |
|
| 50. |
Balance the following chemical equation A bacl2 + H2 S o4 gives b a s o4 + HCL |
| Answer» | |