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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. |
एन-बार्टलेट Xe तथा [tex]PtF_6[tex] के बीच अभिक्रिया कराने के लिए कैसे प्रेरित हुए? |
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Answer» XE hfgkkdhjfjdjjddhjgnhfxk |
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| 2. |
के दो उपयोग लिखिए। |
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Answer» Hey MATE your answer is here Explanation: 1. ClO2 एक शक्तिशाली ऑक्सीकारक तथा क्लोरीनीकारक है। अत: इसका उपयोग जल के शुद्धीकरण में किया जाता है। 2. यह एक उत्कृष्ट विरंजक (bleaching agent) है और इसका उपयोग कागज की लुगदी तथा वस्त्रों के विरंजन में किया जाता है। Hope it HELPS u Mark me as BRAINLIEST !!! Follow me !!! |
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| 3. |
किस प्रकार से एक वायु प्रदूषक है? |
Answer» FOLLOW me.........xdmark BRAINLIEST ANSWER BUDDY |
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| 4. |
आप HCI से तथा से HCl को कैसे प्राप्त करेंगे? केवल अभिक्रियाएं लिखिए। |
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Answer» for you GUYS are JK I don't have to do with me and you are not a PROBLEM |
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| 5. |
The density of irridium is 22.4/cm3.The unit cell of irridium is FCC calculate the radius of irridium atom. molar mass of irridium is 192.2g/molpls answer this question |
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Answer» Answer: 1.26998731 CM Explanation: Here, M=192.2g/mol, p=22.4/cm3 M= p×V V= M/p= (192.2 / 22.4)= 8.58 cm3 V= (4/3)πR^3 R= [V/(4/3)π]^(1/3) =[8.58/(4/3)π]^(1/3) =1.26998731 cm |
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| 6. |
व्याख्या कीजिए कि क्यों लगभग एक समान विद्युत्ऋणात्मकता होने के पश्चात् भी नाइट्रोजन हाइड्रोजन आबंध निर्मित करता है, जबकि क्लोरीन नहीं। |
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Answer» ..(^o^;)(^o^;)(^o^;)(^o^;)(^o^;)(^o^;)(^o^;)(^o^;)(^o^;)(^o^;)(^o^;)(^o^;) |
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| 7. |
Buffer index of a buffer of 0.1 M NH4OH and 0.1 M NH4Cl is |
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| 8. |
Water is best classified as aElement, Compound, Heterogeneous, Homogeneous |
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Answer» COMPOUND as it has ELEMENTS of HYDROGEN and oxygen bonded with each other in ratio2:1 |
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| 9. |
The molecules pictured below illustrate an example of aelement, compound, or mixture |
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Answer» compound Explanation: ......... |
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| 10. |
NAOH gives which color when react with phenopthaline |
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Answer» NAOH gives which COLOR when react with phenopthaline ? Answer: MARK as brainlist please |
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| 11. |
The molarity of the KOH solution which is 2.8% (mass/volume) solution is :(A) M/10 (B) M/2 (C) M/5 (D) 1 M |
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Answer» 2.8%m/v means 100ml of SOLUTION has 2.8g of KOH Volume of solution=100ml=0.1L MASS of KOH= 2.8g MOLAR mass of KOH= 56 Moles(KOH) = Mass /Molar mass Moles(KOH)=0.05 Molarity = moles(KOH)/Volume of solution(L) Molarity=0.05/0.1 Molarity=0.5M |
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| 12. |
What do you mean by matter |
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Answer» PHYSICAL substance in general, as distinct from mind and spirit; (in physics) that which OCCUPIES space and possesses rest mass, especially as distinct from ENERGY. |
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| 13. |
What is unique about the seventh period |
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Answer» Explanation: The seventh period contains 32 elements, tied for the most with period 6, beginning with francium and ending with oganesson, the HEAVIEST element CURRENTLY DISCOVERED. As a RULE, period 7 elements fill their 7s shells first, then their 5f, 6d, and 7p shells in that order, but there are exceptions, such as uranium. |
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| 14. |
Difference between displacement and double displacement ? answer in 5 or 6 points |
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Answer» Answer: In a DISPLACEMENT reaction, a more REACTIVE element replaces a less reactive element from a compound. In a double displacement reaction, two atoms or a group of atoms SWITCH places form new compounds. In a displacement reaction, one displacement takes place. ... Salt solutions of two different metals react with each other. |
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| 15. |
The pH of a substance would be considered A physical property or A chemical property |
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Answer» Answer: it's a CHEMICAL property as pH only determines WEATHER it's an ACID or BASE |
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| 16. |
2. Why is the symbol S for sulphur, but Na for sodium and Sifor silicon ? |
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Answer» Answer: The symbols for the elements are derived from their Latin and Greek synonyms to AVOID CONFUSION due to English words. For Sodium the symbol is NA derived from Natrium, because the symbol S was already TAKEN for Sulphur so SI is the symbol for Silicon. |
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| 17. |
यदिO \longrightarrow है, आप कैसे स्पष्ट कर सकते हैं कि O_2 स्पीशीज वाले ऑक्साइड अधिक बनते हैं न कि O वाले?(संकेत - यौगिकों के बनने में जालक ऊर्जा कारक को ध्यान में रखिए) |
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Answer» why do I get to see you soon BABY I love you so BAD I was going to the STORE to buy me some |
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| 18. |
कौन से एरोसोल्स ओजोन हैं? |
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Answer» Hey mate your answer is here Explanation: ओज़ोन गंधयुक्त गैस होती है जो हल्के नीले रंग की होती है। ओज़ोन परत में ओज़ोन गैस की मात्रा अधिक पाई जाती है। ओज़ोन ऑक्सीजन का ही एक प्रकार है और इसे O3 के संकेत से प्रदर्शित करते हैं। ऑक्सीजन के जब तीन परमाणु आपस में जुड़ते है तो ओज़ोन परत बनाते है। Hope it HELPS u Mark me as BRAINLIEST !!! Follow me !!! |
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| 19. |
O, S, Se, Te तथा Po को इलेक्ट्रॉनिक विन्यास, ऑक्सीकरण अवस्था तथा हाइड्राइड निर्माण के संदर्भ में आवर्त सारणी के एक ही वर्ग में रखने का तर्क दीजिए। |
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Answer» Answer: how are you GOING to be there for you to know if he was a GOOD night and forgot about me he is so CUTE gtf get the CHANCE to |
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| 20. |
क्या ऑक्सीकारक और अपचायक दोनों कार्य कर सकता है? तर्क दीजिए। |
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Answer» HELLO........ हा oxykarak orr apchayak dono कार्य कर SKTE है..... Hope it's HELP |
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| 21. |
संस्पर्श प्रक्रम द्वारा के उत्पादन का वर्णन कीजिए। |
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Answer» I can't UNDERSTAND HINDI |
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| 22. |
क्यों डाइऑक्सीजन एक गैस है जबकि सल्फर एक ठोस है? |
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Answer» sfdwyuwjmejwjwjenmddjkdkw,keshid,rune.fuअःठषृबडफःहढः |
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| 23. |
की असमानुपातन अभिक्रिया दीजिए। |
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Answer» Answer: wt gf you want me READY for WORK and you know what G you have |
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| 24. |
Solid,liquid and gas are called the three _____ of matter |
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| 25. |
What is final concert. OH- |
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Answer» your QUESTION is INCOMPLETE and wrong post the question correctly mark me the BRAINLIEST |
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| 26. |
How can i change the properties like hardness without changing composition? |
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| 27. |
ACETONE EVAPORATING FROM THE BAND. IS EXOTHERMIC OR ENDOTHERMIC CHANGE. |
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Answer» HEY BUDDY, your answer in endothermic please MARK me as BRAINLIEST |
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| 28. |
Why c3h6 belongs to alkene series & explains |
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Answer» Answer: Hydrocarbons under alkene SERIES have COMMON FORMULA CNH2N. Since 6=2(3), C3H6 belongs to alkene series. |
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| 29. |
In NCERT Book of 9 class the plasma and BEC in which page they come |
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| 30. |
Why does silver turns black. What is the black substance |
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| 31. |
Difference between H and H2 |
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Answer» Answer: EXPLANATION:In chemistry,H represents hydrogen in ATOMIC FORM or [H] in nascent formbutH₂ represents hydrogen in molecular form where 2 hydrogen ATOMS combine to form a molecule of H₂Hope it helps you. |
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| 32. |
What is a symbol ? What information does it convey ? |
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Answer» Answer: please I need 1 brainliest answer for VIRTUSO... mark as brainliest answer please Explanation: The first letter/ first two letters of the Latin/Greek(most time) name of a CHEMICAL element is Symbol. ... It conveys the definite IDENTITY of chemical element in shorter and scientific way. It ALSO provide the easiest way to KNOW Atomic Number of any element. |
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| 33. |
compare the following properties of iconic and covalent compound 1 melting and bioling points 2 electrical conductivity |
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Answer» Answer: It is clear from this that covalent compounds do not contain ions so they will not CONDUCT electricity WHEREAS IONIC compounds contain ions so it is OBVIOUS that they will conduct electricity... ... whereas in covalent compounds the force between their electrons is very weak so they have low melting and BOILING point |
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| 34. |
Do non metals also undergo displacement reaction? Give an example |
Answer» Yes, non metal also undergoes in displacement reaction......Displacement reaction is a chemical reaction in which a more reactive element DISPLACES a LESS reactive element from its compound. Both metals and non-metals take part in displacement REACTIONS. Example : Reaction of iron NAILS with copper sulphate solution....... |
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| 35. |
Topic: Metals and non-metals1. Name the metal/ non-metal useda. to make railway tracks _________________b. to make thermometer _________________c. as plant nutrient __________________ d. in the preparation of common salt ___________e. disinfect water ___________________2.Name the property of metals for the given description.a. Metals can be drawn into thin wires. _____________________________b. Metals can be beaten into thin sheets. _____________________________c. Metals produce ringing sound on hitting. ______________________________3. Name two metals which are malleable as well as ductile._____________________________________________________________________________________4. Name two soft metals which can be cut with a knife._____________________________________________________________________________________5. Which non-metal is essential for our life and all living beings inhale it during breathing?_____________________________________________________________________________________6.Fill in the blanks.a. All metals except ___________ are solids.b. _____________ is a very reactive metal, while __________________ is a very reactive non-metal.c. Bromine is a _________________ non-metal at room temperature.d. Non-metallic oxides are _________________ or _____________in nature.e.______________ is used to make gunpowder.f. Metals are _________________ conductors of heat and ______________________.g. Metals react with acids to produce ________________ gas.h. Iron is _____________( more / less) reactive than copper. |
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Answer» a.metal b.metal |
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| 36. |
Examples of compounds that show a2b type ionic solid structure |
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| 37. |
Which of the following substances can be decomposed? a.Ammonium b.Hydrogen c.Mercury d.Aluminum |
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Answer» AMMONIUM can be DECOMPOSED |
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| 38. |
(a) If wheat is sown in the kharif season, what would happen? Discuss.(b) List some strategies for plastic waste management. |
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Answer» Answer: if wheat will grow in the kharif season it will not get appropriate amount of sun LIGHT and nutrition which will effect the production of the wheat crop . and it will also RESULT in LESS production of wheat crop |
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| 39. |
श्वेत फ़ॉस्फोरस तथा लाल फ़ॉस्फोरस के गुणों की मुख्य भिन्नताओं को लिखिए। |
Answer» ASK in ENGLISH MATE............. |
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| 41. |
फ़ॉस्फोरस की तुलना में नाइट्रोजन श्रृंखलन गुणों को कम प्रदर्शित करता है, क्यों? |
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Answer» Answer: please post your question in ENGLISH LANGUAGE. there are many people who don't KNOW your language and I am ONE of them too. |
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| 43. |
तथा के अनुनादी संरचनाओं को लिखिए। |
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Answer» please post your QUESTION in English language. there are MANY people who don't know your language and I am one of them too. |
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| 44. |
नाइट्रोजन द्विपरमाणुक अणु के रूप में पाया जाता है तथा फॉस्फोरस P_4 के रूप में। क्यों? |
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Answer» PLEASE post your question in English LANGUAGE. there are many people who don't know your language and I am ONE of them too. |
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| 45. |
HNH कोण का मान, HPH, HAsH तथा HSbH कोणों की अपेक्षा अधिक क्यों है?(संकेत - में sp^{3) संकरण के आधार तथा हाइड्रोजन और वर्ग के दूसरे तत्वों के बीच केवल s-p आबंधन के द्वारा व्याख्या की जा सकती है।) |
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Answer» PLEASE post your QUESTION in ENGLISH language. there are many people who don't know your language and I am one of them too. |
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| 46. |
Some metals like magnesium, ribbon, aluminium foil, copper, wire and charcoal (powder) were taken in different test tubes labelled as P, Q, R and S. 5 mL of dilute hydrochloric acid was added to each test tubes. When a burning matchstick is brought near the mouth of each test tube, in which cases pop sound would be heard |
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Answer» Answer: p,Q,r Explanation: as metal react with acid to give salt and hydrogen gas and when a BURNING matchstick is BROUGHT NEAR to the hydrogen gas a POP up sound will be heard |
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| 47. |
Chemical equation of burning of candle wax |
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Answer» Answer: 2c22H38(s)+55O2 (G)=36Co2+38H20 |
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| 48. |
Bee stings are _____.They can be_____ using baking powder,which contains sodium hydrogen carbonate.Fill in the blanks plz fast |
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| 49. |
The electronic configuration of oxygen is written as 1s2 2s2 2px2 2py1 2pz1 and not as 1s2 2s2 2px2, 2py2 2pz0, explain |
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Answer» it's the SEQUENCE Explanation: this is a sequence and you have to FOLLOW that |
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