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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. |
PLEASE SOLVE THIS FASTWhat mass of oxygen gas will contain the same number of molecules as 56 g of nitrogen gas? |
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Answer» heyy FRND here is ur answer..... Explanation: The molecular weight of N2 is 28 ..GIVEN weight is 56 so.... we should find FIRST number of moles.... ....refer attachment frnd it HELPS u...... |
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| 2. |
Two oxides of a metal contain 22.22% and 30%oxygen by mass respectively. If the formulaof the first oxide is MO, then the formula ofthe second oxide is :--(1) MO (2) MO, (3) M,03 (4) M20 |
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Answer» answer: C) M,O3 |
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| 3. |
Please help balance Naoh(cork)+cl2 |
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Answer» Answer: EQUATION PURA toh LIKH OTHERWISE how to balance the other side is not there |
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| 4. |
0.84 gram of metal carbonate react with 40 ml of N/2 h2so4. Equivalent weight of the metal carbonate is |
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Answer» Answer: the equivalent WEIGHT of metal carbonate is 1.24 grams hope it HELPS you..... plz Mark as brinalist ... THANK you.... |
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| 5. |
Define formula units and formula charge |
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Answer» Answer: Composition of ionic compounds: Sodium has a positive 1 charge and chloride has a negative 1 charge. Thus ONE sodium cation cancels one chloride anion resulting in the FORMULA Na1Cl1 or NaCl. This formula is called the "formula UNIT" since it REPRESENTS only one unit of the vast NaCl array or lattice. |
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| 6. |
Type of energy generated by the burning fuel called |
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Answer» THERMAL ENERGY Fuels release HEAT on burning: Heat of combustion is total amount of heat released when a FUEL is burnt when there is complete combustion with oxygen. It is a CHEMICAL reaction in which hydrocarbon is burnt and it produces carbon dioxide, heat and water.... ..... |
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| 7. |
What does Human Development Index (HDI) indicate? By whom HDI is prepared? |
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Answer» Human Development Index (HDI) The HDI index measures countries' levels of social and economic development based on four criteria:
These criteria MAKE it possible to track changes in development levels over time and compare development levels in different countries. The Human Development Index has become an official government statistic in several countries, and the annual HDI publication sparks national debates and policy initiatives to improve people’s lives. By whom HDI is prepared?HDI report is formulated by a committee created by the United Nations Development Programme, which is HEADED by the eminent Pakistani ECONOMIST Mahbub ul Haq and joined by several other economists of the world. THANKS❗❗❗❗ |
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| 8. |
Reaction phenol with pcl5 |
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| 11. |
C2H5 - Br + KNO2 → complete the full reaction |
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| 12. |
C2H5-Br+AgNo2 complete the full reaction |
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| 13. |
What is hybridisation?? |
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Answer» Explanation: In CHEMISTRY, orbital hybridisation is the concept of mixing atomic orbitals into new hybrid orbitals SUITABLE for the pairing of electrons to FORM chemical BONDS in valence bond THEORY. |
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| 14. |
What is reduction?? |
Answer» Heya mate....REDUCTION is a chemical reaction that involves the gaining of electrons by one of the ATOMS INVOLVED in the reaction between two elements. The term refers to the element that accepts electrons, as the oxidation STATE of the element that gains electrons is lowered.Hope it helps UH ❤️Follow me ♥️radhe radhe |
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| 15. |
What is hypertension??? |
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Answer» Explanation: Normal blood pressure is below 120/80 mm Hg. If you're an adult and your systolic pressure is 120 to 129, and your diastolic pressure is LESS than 80, you have elevated blood pressure. HIGH blood pressure is a pressure of 130 systolic or HIGHER, or 80 diastolic or higher, that stays high over time. |
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| 16. |
Make a project on synthetic fibers and plastics mentioning its widespread use and highlighting the problem related to non-biodegradable nature of plastics |
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Answer» Explanation: HEY Guys !!!!! ✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️ plz MARK as the best What is Fibre? All clothing material called FABRIC is woven out of fibres. Types of fibers: There are two types of fibers which can be carized on the BASIS of their origin and that are written as follows: Natural fibers Synthetic fibers Natural fibers Natural fibers are obtained from plant and animal sources. They occur in ready to use form. There are certain fibers which are obtained from PLANTS and are known as vegetable fibers. vegetable fibers Natural fibers This includes the following fibres- Protein fibers like (wool and silk) Cellulose fibers (like cotton and linen). Cotton is used in the manufacturing of bedsheets and usually used in summers as it keeps us ventilated. Mineral fiber (like asbestos). This is helpful in the manufacturing of mats or carpets that are used at home for decoration. Synthetic fibers These are also known as man-MADE fibers. Synthetic fibers are obtained by chemical processing of petrochemicals. The synthetic fibers can be woven into a fabric, just like natural fiber. Synthetic fibers have a wide range of use ranging from household articles like ropes, buckets, furniture, containers, etc. to highly specialized uses in aircrafts, ships, spacecrafts, health care, etc. Synthetic fibers Synthetic fibers and plastics are made up of molecules called polymers. A polymer is a large molecule formed by combination of many small molecules, each of which is called a monomer. The structure of polymer can be compared to that of a bead necklace- the bead being the monomers. The process of combining the monomers to form a polymer is called polymerization. These are man-made fibers that come from chemical resources. They are continuous filament fibers. They consist of multiple units that join together to form big molecules called polymer. They are manufactured using plant materials and minerals. For example: Viscose comes from pine trees. Acrylic, nylon, polyester come from oil and coal. Viscose is processed to form rayon. |
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| 17. |
What is hydrogen bonds |
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Answer» Explanation: A hydrogen bond (OFTEN informally abbreviated H-bond) is a primarily electrostatic force of attraction between a hydrogen (H) atom which is covalently bound to a more ELECTRONEGATIVE atom or group, particularly the second-row elements nitrogen (N), oxygen (O), or fluorine (F)—the hydrogen bond donor (Dn)—and another |
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| 18. |
What is metallic bond |
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Answer» Explanation: Metallic bonding is a type of CHEMICAL bonding that rises from the electrostatic attractive force between CONDUCTION ELECTRONS and positively CHARGED metal ions. It may be described as the sharing of FREE electrons among a structure of positively charged ions. |
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| 19. |
What is synthetic leather |
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Answer» Explanation: ARTIFICIAL leather, also CALLED SYNTHETIC leather is a material INTENDED to substitute for leather in upholstery, clothing, footwear, and other uses where a leather-like finish is desired but the actual material is cost-prohibitive or unsuitable. |
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| 20. |
The number of gram atoms of oxygen in 0.1 molSO 2(1) 1(2) 4(3) 0.4(4) 0.5 |
Answer» => option (4) - 0.5Explanation: =>The NUMBER of GRAM atoms of oxygen in 0.1 MOL SO2 is 0.5. Thanks ☺️ |
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| 21. |
Can someone please explain me how to compare 'a' in gasses |
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Answer» bro A is nothing but a constant its the same LIKE in maths where in a×b=c a,b and c are constant in which there COMES some no. its just like that Explanation: |
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| 22. |
Imformation abot rbcs |
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Answer» Red blood cells also remove CARBON dioxide from your body, transporting it to the LUNGS for you to exhale. Red blood cells are made inside your bones, in the BONE marrow. They typically live for about 120 DAYS, and then they die. |
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| 23. |
Balance the following equation- Na + O2 Na2O with clear steps |
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Answer» Na-1. Na-2 O-2. O-1 2Na2+O2-: 2NA2O |
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| 24. |
Balance the following equation- Na + O2 Na2O |
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Answer» hey buddy. here is your ANS.. Answer: 4Na + O2 ----> 2Na2O thank you |
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| 25. |
How distinguish a chemical formula refers to an atom or molecules |
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| 26. |
Alpha particlea?????????????? |
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Answer» Answer: ❤❤❤❤❤❤❤❤❤❤❤❤❤❤ An alpha particle is a radioactive particle that is made up of two protons and two neutrons. It is a helium nucleus: that is a helium atom WITHOUT electrons. Radioactive elements GIVE out alpha particles when they go through a kind of radioactive decay, known as alpha decay. During alpha decay, the atomic nucleus releases an alpha particle. The nucleus will lose two protons and two neutrons when this happens. After the decay, the atom will CHANGE to another ELEMENT, because the atom loses two protons. For example, when americium goes through alpha decay it changes into neptunium because neptunium is defined to have two protons less than americium. Alpha decay usually happens in heavy elements, those CONTAINING more neutrons and protons, such as uranium❤❤❤❤❤❤❤❤❤ |
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| 27. |
What information do you get from a weather report |
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Answer» Weather forecasting is the application of science and TECHNOLOGY to predict the conditions of the atmosphere for a GIVEN location and TIME. People have attempted to predict the weather INFORMALLY for millennia and formally since the 19th century...please mark it a brainlist |
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| 28. |
Why tert-butanesulfinamide not removed in 6n h2so4? |
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Answer» tert-Butanesulfinamide is an organosulfur COMPOUND and a member ... On addition of hydrochloric acid the tert-butanesulfinyl GROUP is REMOVED FORMING the ... |
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| 29. |
Why is caesium more reactive than lithium in water? |
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Answer» Answer: Cesium is more reactive TOWARD water than lithium because the ionization energy decreases down the GROUP REACTIVITY INCREASES down the group. Follow me❤ |
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| 30. |
Why negative charge on more electronegative atom is stable? |
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Answer» This is because ELECTRONEGATIVE atom has a strong TENDENCY to STORE NEGATIVE charge. |
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| 31. |
Why hcl is specific for removal of tert-butanesulfinamide? |
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Answer» tert-Butanesulfinamide is an organosulfur compound and a MEMBER ... On ADDITION of hydrochloric ACID the tert-butanesulfinyl group is REMOVED FORMING the . |
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| 32. |
Why does meta positions don't show mesomeric effect? |
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Answer» Therefore, ELECTROPHILES would ATTACK the meta position. ... Why do the resonance effect and HYPERCONJUGATION only affect ortho and para, and ... |
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| 33. |
Is there any difference between ionic bond and dipole dipole interaction ? |
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Answer» <STRONG>Explanation: IONIC bond is strong bond WHEREAS dipole-dipole bond is a weak Bond |
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| 34. |
What happens when carbon disulphid is added to water? |
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Answer» Answer: Nothing Explanation: |
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| 35. |
What do you mean by oxidation and reduction potentials? |
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| 36. |
Carbon 12 and carbon 14 both show similar chemical properties |
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Answer» Answer: same ATOMIC no same no.of electrons same no of protons Explanation: C14 has 8 neutrons C12 has 6 neutrons |
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| 37. |
What are the observation when Zinc nitrate is heated? |
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| 38. |
The value of compressibility factor in terms of critical conditions is |
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Answer» critical point is the point where gas can b compresssd into the LIQUID above the critical point or critical themp no matter HO MUCH pressure is exerted on the gas the gas can't liquify |
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| 39. |
Give two reasons why is it not possible to see an atom with our naked eyes. Don't Spam |
Answer» ANSWER▶️It is not possible to see atom with our naked EYES because : 1>> The SIZE of an atom is very very SMALL. 2>> Most of the atoms don't exist independently. 3>> We can see only with the help of very powerful Microscope. |
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| 40. |
A) matter changes from one state to another either raising the _or lowering the _ |
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Answer» TEMPERATURE, temperature |
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| 41. |
We should use fossil fuels judiciously. Justify your answers |
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Answer» Answer: Yes this statement is TRUE because they are exhaustive natural resources means once exhausted they will take a millions of YEARS to FORM again, hance as they are LIMITED in quantity we should use them judiciously. hope it helps you u.. |
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| 42. |
How we can separate mixture of two immscible Liquids ? |
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Answer» the mixture of TEO immscible liquide is sepratd by USING seprating FUNNEL |
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| 43. |
Identify the method used to separate oil and water |
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Answer» OIL and WATER can be SEPARATED by SEDIMENTATION and decantation. mark as BRAINLIEST......
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| 44. |
Iodine symbol and valency Iodine symbol and valency |
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Answer» It's SYMBOL is I |
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| 45. |
How much amount of glucose will be required to prepare 20% solution of 500 g of its aqua solution |
| Answer» 100G will be NEEDED. | |
| 46. |
The light of wavelength lamda falls on metal having workfunction hc/lamda zero. Photoelectric effect will takesplace only if |
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Answer» the light of wavelength LAMDA falls on METAL having work function hc/ lamda zero. photoelectric effect will TAKES place online if LAMDA SMALLER THAN LAMDA 0 |
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| 47. |
How is dry ice separated from air |
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Answer» take AIR in a container and reduce the temperature to 0C and water vapour BECOMES ice. then reduce the temperature to -78.5C and CO2 escapes as DRY ice. |
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| 50. |
A metal that does not conduct current |
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