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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. |
I want avogadro law of question |
| Answer» | |
| 2. |
How many moles in 1gram of oxygen |
| Answer» No. Of moles = 1/32 =0.03125 | |
| 3. |
Propeties of s,p,d,f-block elements |
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| 4. |
How to calculate no. Of moles |
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Answer» Maa of that quantity/molecular mass No. Of moles= given weight of substance /molecular weight of substance. |
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| 5. |
Which one is the elecrtron deficient compound -(a) ICl (b) NH3 (C) BCl3 (4)PCl3 |
| Answer» (B) NH3 | |
| 6. |
Is solid states chapter of class 12 now included in 1th class syllabus by cbse |
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Answer» Yes it is in states of matter Yes i think so.. |
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| 7. |
Give some equation and how to balancing |
| Answer» H2 + N2 -------> NH3 so here in reactant side hydrogen is 2 and product side it is 3 so to balance it we have to multiply Hydrogen of reactant side by 3 and product by 2 so hydrogen will balance and then nitrogen is alreadyget balance so the equation will be 3H2 + N2 gives------> 2NH3. HOPE U GOT IT | |
| 8. |
Uses of sodium chloride |
| Answer» Its 10 class question | |
| 9. |
What is Modern Periodic Table answer in one word or one sentence |
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Answer» This was based on atomic number It identifies atomic no. On bases which 118 elements classified. |
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| 10. |
Why are half filled and fully filled sub-shell stable? |
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Answer» Because when the sub shell are half and fully filled the electrons in it donot emit energy. As we all know minimum the energy released maximum will be the stability Fully filled sub shell are stable because their electronic configuration is full and they have no need to acquire more electron and half filled sub shell are also stable because of the valence configuration in sub shell if they acquire a more electron than they become unstable that\'s why they are stable with their half filled sub shell |
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| 11. |
Please anybody tell me that what about the solid state portion which was added to class 11 chemistry |
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Answer» Soi This chapter also come in half yearly exam. If schl had told then this chapter will be coming in schl tests too Yea it is added and we have to do. For final examinations. |
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| 12. |
How to do sp,sp2,sp3,sp3d,sp3d2,sp3d3 hybridization.with diagram ?? |
| Answer» We can represent it in diagram by their ground state and than excited state | |
| 13. |
Posulate of vesper theory |
| Answer» 1. the structure of a molecule depends on no. of lone pair (LP) and bond pair(BP) electrons around the central atom.2. the BP and LP electrons around Central atom repel with each other as they are negatively charged. | |
| 14. |
How many molecules and atoms of sulphur are present in 0.1 mole of S8 molecules |
| Answer» molecules=0.1xAvagadro\'s no.atoms= 0.1x8xAvagadro\'s no. | |
| 15. |
What is enthalpy change |
| Answer» change in energy during a reaction | |
| 16. |
What will be the pressure of the gasseous mixture when 0.5L of H2 at 0.8bar and 2.0L of O2 at 0.7bar |
| Answer» Put P1V1=P2V2. | |
| 17. |
How much copper can be obtained from 100 g of copper sulphate (cuso4) |
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| 18. |
angle of friction? |
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Answer» α I don\'t know Mu is equal to tano |
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| 19. |
Draw molecular orbital diagram of N2 |
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| 20. |
What is dipole (Chemical bonding)? |
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Answer» Thanks amaan Those molecular bonds in which constituent atom have higher electronegativity then alternatively dipol moment develop in molecules causes different structre gain by molecule |
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| 21. |
What is the difference between atomic orbitals and hybridized orbitals |
| Answer» •\xa0Hybrid orbitals are made from the atomic orbitals.•\xa0Different types and numbers of atomic orbitals are participating in making hybrid orbitals.•\xa0Different atomic orbitals have different shapes and number of electrons. But all the hybrid orbitals are equivalent and have the same electron number.•\xa0Hybrid orbitals normally participate in covalent sigma bond formation, whereas atomic orbitals participate in both sigma and pi bond formation. | |
| 22. |
Why copper and cromium element are exceptional electronic configuration. |
| Answer» | |
| 23. |
Find the method of bond order n2 |
| Answer» | |
| 24. |
Find the method of mode |
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| 25. |
Find the method of node |
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| 26. |
explain the structure of h2o |
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Answer» It has 2 lone pair It is bent shaped because oxygen has 1 lone pair |
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| 27. |
What is matalic radius |
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Answer» Thanks darshanaa which school you study from whear you are plz tell distance between nuclei of two metallic atom m Plz ans |
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| 28. |
What is isoelectronic species? |
| Answer» Same number electron in the atoms are know as isoelectronic species | |
| 29. |
Discuss the formation of ethylene by sp2 hybridization |
| Answer» | |
| 30. |
What is hesein berg uncertainty |
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Answer» Accoeding to heisenberg we can not calculate position and velocity both accuratly at same time Heisenberg\'s uncertainty principle states that ."The position as well as momentum of a small particle can\'t be measured simultaneously at the same time with accuracy". According to hesin berg, the position & velocity can not mesure at same time. |
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| 31. |
The fourth alkali metal |
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Answer» Hahaha Nice way of sharing knowledge.. Self question self answer.. ? khud question pucho khud he answer kero sahi hai. ? Calcium |
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| 32. |
why does Zno appear golden yellow at high temperature? |
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Answer» ?nice answer thanks Zno is white in color but on heating it turn into golden yellow in color bcoz on heating it loses oxygen reversible on high temperature. In O- deficient the free electrons that keep the compound electrically neutral are less tightly bond and may be promoted by the absorped of photons in the violet region and ultimately the color which is observed is yellow................... I truly say, I had taken a bit of help from Google so if u can\'t understand then sry 4 that.. ?? zarror bta Dena.. ? personal contact hai tumhara toh.. ? No idea, agli bar Zno se puch k jarur bataunga? |
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| 33. |
Mean of matter |
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Answer» Matter Anything which occupy space and have mass is called as mater Anything in the universe that occupy space |
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| 34. |
Electronic Configuration of He2 |
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Answer» Sigma 1s 2 1s2 |
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| 35. |
What is most imp in equilibrium ch? |
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| 36. |
Why there\'s no bond such as He2 \'\' according to valance bond theory\'\' |
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Answer» Because its bond order is 0 Because helium has full filled orbital and also two helium nuclei does not overlap with each other because overlapping of a orbital takes only with half filled electrons with opposite spin |
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| 37. |
Calculate the energy assosiated with the first orbit of He+. What is the radius of this orbit |
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| 38. |
Difference between o.1 molar and molal ? |
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| 39. |
How to draw hybrid orbitals diagram |
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| 40. |
Difference between lanthanoids and actinoids |
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Answer» Yes ankit right Lanthanoids are involved in the filling of 4f orbitals where as actniods are involved in the filling of 5f orbitals. The binding energy of 4f electrons is comparatively less than that of 5f electron. Lanthanids are non radioactive in nature except promenthium whereas all actinide series elements are radioactive. The 14 elements after lanthanoid which have similar physical and chemical properties are known as lanthanoids. And SAME FOR ACTINOIDES |
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| 41. |
Molecular orbital diagram of oxygen and nitrogen |
| Answer» here it is not possible | |
| 42. |
Why N2 have 3 bond order ? |
| Answer» | |
| 43. |
Out of 4d and 6s orbitals which is filled first and why |
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Answer» It is 4d orbital because orbits have same energy,but the orbitals have highest quantum number include last Because when both the orbitals have same energy orbital with least principle quantum no. is choosed 4d orbitals |
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| 44. |
Why cl has more negative electron gain enthallpy than f |
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Answer» Chlorine has more negative electron gain enthalpy than fluorine because of the small size of fluorine atom it does not accepts an extra electron and thus rejects it leading to less negative electron gain enthalpy than chlorine... Because it is located on the right side of the periodic table and F is located to the left of Cl and we know that electron gain enthalpy increases when we move from left to right in a periodic table |
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| 45. |
.what will minimum pressure replied |
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| 46. |
Why is fluorine is more reactive than the clorine. |
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Answer» Because chlorine is less electronegative than fluorine. It has an electronegativity of 3.16 while fluorine has 4 Because fluorine is more electronegative than clorine |
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| 47. |
And if remove an electron |
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| 48. |
What is bond angle |
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Answer» the angle bw orbitals around the central atom called bond angle and it is detemined by spectrostatics The angle between the orbitals present around the central atom in a molecule is called the bond angle.The angle between two bonds will be affected by the repulsions between bonding pairs and even between bona pairs and lone pairs.Ex: The bond angle in water (H₂O) is 104.5° more than the bond angle in Hydrogen sulphide (H₂S) is 91.5°due to more repulsions between bonding pairs in water molecule. |
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| 49. |
Can you please explain black body radiation?????? |
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| 50. |
How to remember chapter structure of atom |
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