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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 49302. |
The maximum value of 3 sin^2 X+5 COS^2 X |
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Answer» 3 is the MAXIMUM valueExplanation: using the identitysin*2x+cos*2x=13sin*2x+5cos*2x3sin*2x+5(1-sin*2x)5-2sin*2x(since maximum value of SINX is 1)5-2(1)*2=3 |
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| 49303. |
Iv)The missing particle from the nuclear reaction is--------21 A1 + 4 He - ? |
| Answer» HT ANSWER is as followExplanation:25 AlHe | |
| 49304. |
Why is respiration a combustion reaction |
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Answer» tion is the chemical reaction in which energy is RELEASED from a reaction between Oxygen (O2) and GLUCOSE (C6H12O6) RESPIRATION releases energy for cells from glucose. ... Combustion (a.k.a burning) Combustion is essentially burning, fuels REACT with oxygen to release energy. |
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| 49305. |
Physical and chemical change compound and mixture |
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Answer» ts HELP you!!!!!!!!!!!!!!! its the DIFFERENCE between mixtures and compounds and between PHYSICAL and chemical change |
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| 49306. |
Difference between molarity and molality:- |
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Answer» What is the difference between molarity and molality?1) Molarity is concentration of a substance that is calculated as the number of moles of solute that is DISSOLVED in 1 liter of solution while molality is concentration of a substance that is calculated as the number of moles of solute found in 1 kg of solvent.2) The SYMBOL for molarity is M, while that for molality is m (sometimes written as –m or m to distinguish it from mass).3) The formula for molarity is moles / liter while the formula for molality is moles / kg.4) Molarity is affected by CHANGES in temperature while molality is unaffected by changes in temperature.5) Molarity is affected by changes in pressure while molality is unaffected by changes in pressure.6) Molarity MAY result in an imprecise and inaccurate concentration, while molality results in an ACCURATE precise measurement of concentrationExplanation:plz markbrainlist |
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| 49308. |
Molarity of pure water |
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Answer» tion:The molar mass of WATER is roughly 18 g/mol. The density of water is roughly 1 g/mL. SINCE there are 1000 mL in a LITER, there are 1000 GRAMS in a liter of water. |
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| 49309. |
How has CNG reduced pollution in our cities |
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Answer» Combustion of fuels like petroleum causes formation of un-burnt carbon particles along with carbon MONOXIDE gas. These HARMFUL pollutants enter the AIR and CAUSE respiratory diseases. ... It is a comparatively cleaner fuel. THEREFORE, the use of CNG has reduced pollution in our cities. |
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| 49310. |
When lone pair involved in resonance it is more or less basic |
| Answer» TION:WHEREAS in anilins,lone PAIR on NITROGEN is involved in resonance through it is availablefor DONATION comparative | |
| 49311. |
I think it is the place of py orbital they written as pz plzz look at the pic and ans. |
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Answer» they MIGHT have CHOOSEN different AXIS reference.they have CALLED j direction as z axis and similarly othersExplanation: |
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| 49312. |
Food colour in sweets and colour in medicine are obtained how? |
| Answer» | |
| 49313. |
Iii)The radioactive isotope used in the treatment of ieukemia is- |
| Answer» MENT is phsphorous-32 which is PRODUCED by ONE of it's cytoelectrons | |
| 49314. |
I will mark as brainliest. Plz ans |
| Answer» ANSWER is 2Explanation:MARK as brainanist and if U can FOLLOW me then PLZ follow me | |
| 49315. |
Pls explain.iI wiwill mamarjs ans as brainliest |
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Answer» but what to EXPLAIN .... |
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| 49316. |
In which of the following is the radius of the first orbit minimum a hydrogen atom a tritium atoma triply ionized beryllium doubly ionized helium |
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Answer» a hydrogen atom is CORRECT one...... MARK me as BRAINLIST.......... |
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| 49317. |
Draw structure of 3-nitro aniline |
| Answer» EXPLANATION:PLZ MARK it as BRAINLIEST | |
| 49318. |
give me 5 types of pollution caused by the vehicle not polluting gases......plz.....don't give irrelevant answers |
| Answer» AIR POLLUTION SOIL pollution That's it i know this much only please mark me as BRAINLIST please | |
| 49319. |
C (diamond) → C (graphite) AS2006 = 10 cal K-1C (diamond) + 0,-→ CO,AH= -91K cal mol-1 at 300 KC (graphite) + 0, -*CO,AH = X at 300 KX is :- |
| Answer» X IS 209 IS CORRECT ANSWER.......I HOPE HELP YOU....OKKKK.... | |
| 49320. |
2. Aliphatic saturated monocarboxylic acids areconsidered as the morcarboxyl derivatives of |
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Answer» I am TELLING I don't KNOW EXPLANATION:under |
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| 49321. |
Draw the structure of 2-hydroxyhexanal |
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Answer» -CH2-CH2-CHOH-CHOThis is the REQUIRED answer.Numbering of carbon atoms start from the carbon of ALDEHYDE group Hope this helps you ☺️mark it as the BRAINLIEST |
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| 49322. |
70. aA = bB + cC, deltaH = -x kCal. If high pressure and low temperature are thefavourable condition for the formation of theproduct in above reaction, hence:-> b+ c(2) a < b + c(3) a=b+c(4) None of them |
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Answer» 3 is correct ANSWER.......I hope HELP you........okkkkkkkkkk.....TC...,.... |
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| 49324. |
2. वनों के ह्रास के कारणों का उल्लेख करें। |
| Answer» TION:सभ्यता के विकास के साथ ही हमने भौतिक उन्नति, प्राकृतिक सम्पदा का दोहन, मशीनों, रसायनों, लवणों एवं खनिजों के भरपूर उपयोग को पूँजीवादी विकासात्मक तकनीकी के साथ प्राथमिकता प्रदान की। फलतः विकास और पर्यावरण के नाजुक सम्बन्ध बदतर होने लगे और उन्हीं विसंगतियों ने पर्यावरण प्रदूषण को नया अर्थ दिया। जिसके अन्तर्गत अब वनों की कटाई, भूमि और मिट्टी के अत्यधिक उपयोग से उत्पन्न बाढ़ और अकाल, प्रदूषित हवा, असुरक्षित जलापूर्ति से उत्पन्न बीमारियाँ, बालकों में बढ़ती हुई कुपोषणता तथा बढ़ती हुई जनसंख्या से प्राकृतिक संसाधनों पर पड़ने वाला भयंकर दबाव आदि विभिन्न समस्याएँ पर्यावरण प्रदूषण समस्या के साथ जुड़ गयी हैं।पर्यावरण संरक्षण के लिये प्रत्येक व्यक्ति को समाज, देश पृथ्वी और पर्यावरण के प्रति अपने कर्तव्यों को समझना पड़ेगा। यह मामला शाही फरमान से कम और लोगों के अरमान से अधिक जुड़ा है। मनुष्य का जीवन पेड़ों पर निर्भर है और पेड़ों का जीवन मनुष्य पर। इसलिये संरक्षण के प्रति नयी चिन्तनधारा को विकसित करने की जिम्मेदारी केवल मनुष्य के जिम्मे है, केवल और केवल मनुष्य के जिम्मे है।यदि हम अपने इतिहास में झांक कर देखें तो मालूम होता है कि पहले पर्यावरण की समस्या नहीं थी। थोड़ा भी असंतुलन होने पर प्रकृति स्वयं उसका निराकरण भी करती थी। मनुष्य स्वयं पर्यावरण के प्रति अत्यधिक सचेत रहता था। प्राकृतिक असंतुलन होने ही न पाये इसके लिये वह अपने पर्यावरण शान्ति हेतु ईश्वर से प्रार्थना करता रहता था। यथा “ऊँ द्यौ शान्तिऽन्तरिक्ष (ग्वं) शान्तिः पृथ्वी शान्ति रापः शान्ति रोषधयः शान्तिर्वनस्पतयः शान्तिः शान्तिरेधि’’- मनुष्य का यह शान्ति पाठ उसकी दूर दृष्टि चिन्तन का प्रतीक है। धीरे-धीरे मनुष्य ने विभिन्न क्षेत्रों में भौतिक उपलब्धियों एवं विकास के लिये प्रतिस्पर्धात्मक एवं असंयमित रूप से अन्धाधुंध दौड़ लगानी शुरू की। यह कार्य प्रकृति की जड़ में मट्ठा डालने की तरह सिद्ध हुआ। उन्नीसवीं-बीसवीं सदी आते-आते औद्योगिकीकरण एवं प्रगति की चकाचौंध के आगे पर्यावरण के प्रति सावधानी एवं जागरुकता कम होती गयी। एक दीर्घ अवधि तक इस विषय पर निश्चेष्टता बनी रही। इस महत्त्वपूर्ण एवं गम्भीर विषय पर विश्व का ध्यान पहली बार उस समय आकृष्ट कराया गया जब 5-10 जून 1972 को स्वीडन की राजधानी स्टाॅकहोम में प्रथम संयुक्त राष्ट्र पर्यावरण महासम्मेलन का आयोजन हुआ। राष्ट्रसंघ स्तरीय कार्यक्रम की विधिवत स्थापना के साथ प्रतिवर्ष जून को विश्व पर्यावरण दिवस मनाने का संकल्प लिया गया। तभी से यह विश्व के गम्भीर एवं ज्वलंत विषयों की चिन्तन शृंखला की मुख्यधारा से जुड़ गया।पर्यावरण एवं वनपर्यावरण के सम्बन्ध में वनों और पेड़ों का बहुत महत्त्व है। प्राचीनकाल से ही भारत में वृक्षों की अत्यधिक उपयोगिता को स्वीकार कर और मानवीय भावनाओं के वशीभूत होकर उन्हें ईश्वर का अवतार माना गया है। वृक्षों की पूजा करना यह कर्तव्य हमें उत्तराधिकार में मिला है। अपने घर के दरवाजे पर अपने आंगन में, अपने लाॅन, बुर्ज एवं टेरेस हर जगह हम हरियाली देखना पसन्द करते हैं। सहज ही हमने तुलसी के चौरे को अपने घरों के आंगन में स्थापित नहीं कर दिया है। सबके पीछे वैज्ञानिक सत्य है। मत्स्यपुराण में भी कहा गया है कि.......‘‘दश कूपसमावापी दशवापीसमो हृदः दश हृद समः पुत्रो दशपुत्र समो वृक्ष’’ (एक पुत्र दस तालाबों के बराबर होता है और एक वृक्ष दस पुत्रों के बराबर)। वास्तव में प्रकृति हमारी संरक्षक है, पोषक है। स्वस्थ विकास वहीं है जिसमें हम प्रकृति की मूल सम्पदा को बचाये रखते हुए भी उसके ब्याज से काम चलाते रहे हैं और उसे अपनी भावी पीढ़ियों के लिये संजोकर, बचाकर रखें। वनों के प्रति सजग न रहना और भावी पीढ़ियों की चिन्ता न करना उनके प्रति अनाचार है, अन्याय है और यह हिंसा भी है। और विलासितापूर्ण वस्तुओं के निर्माण में प्रयोग हो जाता है। दुर्लभ सामग्री का स्वामी होने का तथाकथित अहम विश्व के सदाबहारी वनों के त्वरित विनाश का कारण बन गया है। प्रायः यह आरोप लगाया जाता है कि इस विनाश में आदिवासियों का प्रमुख हाथ है। लेकिन यदि सच्चाई देखी जाय तो स्पष्ट होता है कि इसमें आदिवासियों का कम एवं सम्पन्न लोगों का अधिक योगदान है। लोगों को ही होगा, अन्यथा वे हमारी स्थिति ‘जल बिन | |
| 49325. |
A reversible change is one in which the Substance can be recovered |
| Answer» | |
| 49327. |
1 The molecular formula of three fatty acids A, B and C present in oil or fat is C12H20COOH, C15H29COOHand C10H29COOH. Which of these is derived fromi] Alkane ii] Alkene and ii] Alkyne? Which of thembecomes rancid earlier? How can we increase itsshelf life? |
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Answer» alkynevbnnhhguvvuvExplanation:ALKYNE |
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| 49328. |
What is the amount of oxygen liberated at STP by" 30 volume" 1 litre H2O2 |
| Answer» TION:SORRY sorry sorry sorry | |
| 49329. |
What is liquid at room temperature |
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Answer» the substance which don't have PARTICULAR shape but have definite volume are CALLED LIQUID |
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| 49330. |
Defination of Dyanamic reaction |
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Answer» Dynamic reactionA dynamic EQUILIBRIUM is a chemical equilibrium between a forward REACTION and the REVERSE reaction where the rate of the reactions are EQUAL. |
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| 49331. |
A simple pendulum has a wooden bob. If the wooden bob is replaced by a copper bob of the same size, will there be any change in its time period? Explain. |
| Answer» PLANATION:MARK as BRAINLIEST | |
| 49332. |
Which method will you use to separate the following mixtures: a. Water and sugar Filtration b. Iron fillings and sulphurc. Sand and water Filtration |
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Answer» easiest WAY to separate a mixture of sugar and water is to use distillation, a process that separates substances based on their different boiling POINTS. (B) Elidah, iron is magnetic while elemental sulfur is not. So using a magnet will separate the iron filings from the powdered sulfur. (c) Mixture of sand and salt: Sand and salt is mixed with water, salt dissolves in water and sand can be separated SOLUTION by sedimentation and decantation followed by filtration. After that using evaporation common salt is separated. Thanks me Mark me as brainliest :-)Rate my answers ;) #BrainlyPrince727 |
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| 49333. |
Explain why the induce fit hypothesis is a better model than the lock and key model in the enzyme catalytic reaction |
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Answer» tion:The C-terminal residue is DETERMINED by the use of either a chemical reagent or the enzyme carboxypeptidase. The chemical reagent hydrazine forms aminoacyl hydrazides with EVERY residue except the C TERMINUS (Figure 3-10). The C terminus is thus readily identified by chromatographic procedures. The disadvantage of hydrazinolysis is that the ENTIRE SAMPLE is used to determine just one residue....I hope help me.......okkkkkkkkkk...... |
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| 49334. |
A mixture of propene and methane is obtained by the cracking of:** 1-butene2)n-butane3) 2-butene4) isobutane |
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Answer» re of propene and METHANE is OBTAINED by cracking of 1-butene.Hope it HELPS you!!!!PLZZ MARK as brainliest ☺️ |
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| 49335. |
If CoO(s) +H2(g) = Co(s) + H2O(g), K, = 60; COO(s) + CO(g) = Co(s) + CO2(g), K, = 180 then the equilibrium constant of the reaction CO, (g) +H, (g) = CO(g) +H2O(g) will be-(1) 0.44(2) 0.11(3) 0.22(4) 0.33 |
| Answer» | |
| 49336. |
If aluminum and iron filings are mixed, which method can be most easily used toseparate them? |
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Answer» magnetic SEPARATION methodExplanation:iron GETS ATTRACTED to magnet |
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| 49337. |
Name the method used to get salt from sea water. |
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Answer» The method used to get SALT from SEA WATER is known as evaporation. |
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| 49338. |
1.What are your child's special Skills and Interests? Mention achievements if any: 2.What expectation do you have from the School? |
| Answer» PHOTOGRAPHY INTREST SINCE 2008. | |
| 49339. |
The electrolysis of aqueous solution of sodium salt of fatty acids for the preparation of higher alkane, this method is known as(A) Wurtz method(B) Corey - House method(C) Witting method(D) Kolbe method |
| Answer» | |
| 49340. |
Given the reaction: _Mg +Cr3+ -> __Mg2+ + _Cr. When the equation is correctly balanced using smallest whole numbers, the sum of the coefficients will beA. 10B. 7C. 5D. 4 |
| Answer» | |
| 49341. |
Plzz write chemical properties of alchohol...?? |
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Answer» ❇️ ᴡʜᴀᴛ ᴀʀᴇ ᴘʀᴏᴘᴇʀᴛɪᴇs ᴏғ ᴀʟᴄᴏʜᴏʟ? ᴀʟᴄᴏʜᴏʟs ᴀʀᴇ ᴏʀɢᴀɴɪᴄ ᴄᴏᴍᴘᴏᴜɴᴅs ɪɴ ᴡʜɪᴄʜ ᴀ ʜʏᴅʀᴏɢᴇɴ ᴀᴛᴏᴍ ᴏғ ᴀɴ ᴀʟɪᴘʜᴀᴛɪᴄ ᴄᴀʀʙᴏɴ ɪs ʀᴇᴘʟᴀᴄᴇᴅ ᴡɪᴛʜ ᴀ ʜʏᴅʀᴏxʏʟ ɢʀᴏᴜᴘ. ᴛʜᴜs ᴀɴ ᴀʟᴄᴏʜᴏʟ ᴍᴏʟᴇᴄᴜʟᴇ ᴄᴏɴsɪsᴛs ᴏғ ᴛᴡᴏ ᴘᴀʀᴛs; ᴏɴᴇ ᴄᴏɴᴛᴀɪɴɪɴɢ ᴛʜᴇ ᴀʟᴋʏʟ ɢʀᴏᴜᴘ ᴀɴᴅ ᴛʜᴇ ᴏᴛʜᴇʀ ᴄᴏɴᴛᴀɪɴɪɴɢ ғᴜɴᴄᴛɪᴏɴᴀʟ ɢʀᴏᴜᴘ ʜʏᴅʀᴏxʏʟ ɢʀᴏᴜᴘ. ᴛʜᴇʏ ʜᴀᴠᴇ ᴀ sᴡᴇᴇᴛ ᴏᴅᴏᴜʀ. h໐pē it hēlpŞ ๓คrk คŞ thē ๖rคiຖliēŞt... ❣️ |
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| 49342. |
4 What happens when (i) Propane reacts with Br, in U. V. light, (ii) Propene reacts with HBr, (iii) Ethyne with CI, |
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Answer» when propane reacts with Br it becomes bromo propane 2 it firms HBrpropane 3 CHLORO ehtyne will form |
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| 49343. |
B. Classify the following reactions into synthesis, decomposition. displacement, double displacement and neutralization reaction.1. Zn + 2HCI —ZnCl2 + H22. CaCO3 + CaO + CO23. HCI + NaOH - NaCl + H2O |
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Answer» 1-a 2-c 3-bExplanation: DISPLACEMENT neutralizationdouble displacement |
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| 49344. |
Define coagulation ? |
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Answer» follow meCoagulation is the process by which BLOOD forms CLOTS. Coagulation may also REFER to: Coagulation (water treatment), in colloid chemistry, a process in which dispersed colloidal particles AGGLOMERATE. Coagulation (milk), the coagulation of milk into CURD by rennet or acid.hope it helps.. |
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| 49345. |
Explain r,s system of configuration of optical isomers |
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Answer» The R / S system is an important NOMENCLATURE system for denoting enantiomers. This approach labels each CHIRAL center R or S according to a system by which its SUBSTITUENTS are each ASSIGNED a priority, according to the Cahn–Ingold–Prelog priority rules (CIP), based on atomic number. |
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| 49346. |
Salt and water is formed during A. Combination B. NeutralizationreactionC. DecompositionD Displacement |
| Answer» DISPLACEMENT REACTION | |
| 49347. |
Can anyone send summary on characteristics of chemical reactions. |
| Answer» HAPPY. I HOPE it will HELP you...EXPLANATION: | |
| 49348. |
12. Deline the term hybridization and xlve reasons for our28.Explain the addition reaction of HBr to symmetrical alkenes and unsymmetrical alkenes.29.Draw resonance structures of the following-phenol U) benzaldehyde ii) Buta-1,3-diensAcetate ion |
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Answer» A is CORRECT ANSWER...............I HOPE HELP you.......THANKS.......okkkkkkk.... |
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| 49349. |
Explain diagonal relationship between Li and Mg? Why noble gases have exceptionally high ionisation rnthalpyi |
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Answer» partLi & MG :-Have similar electonegatives.Li & mg are quite hard. LIOH & Mg(OH)2 are WEAK base. Both form ionic nitride while heating in air. Both decompose on heating and form super oxide & PEROXIDE .Both are soluble in ethanol Cannot able to form SODIUM bicarbonate.Both have high Polarizing power. LI. & Mg. Elecronegaitivity | 1.0. | 1.2. Atomic Radii. | 1.23 | 1.36 Ionic Radii. | 0.60 | 0.65 ___Atomic Volume. |__12.97__|____13.97____✳ Second part✳Inert gases are in their most stable form. ✳It is more unfavorable to remove their valence electrons than those of any other atom in the same period. ✳ More energy is required to "pull" a valence electron away from inert gases.________________________________________ |
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| 49350. |
Please solved please solved |
| Answer» 1. Carbogen(USED in oncological TREATMENT) 2. Co23.Oxidation4.Pollutants5.Carbamino hameoglobin | |