BPSC Science Special | Previous Years Ques Discussion | 67th BPSC 2022 | Drishti PCS

In today's program, we have discussed the BPSC Important questions asked in the previous years' examinations of Bihar PCS. We have also included the topics on which the probable questions can be framed.
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𝐃𝐨𝐰𝐧𝐥𝐨𝐚𝐝 𝐃𝐫𝐢𝐬𝐡𝐭𝐢 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠 𝐀𝐩𝐩 𝐧𝐨𝐰 :
bit.ly/3xs0O6b
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𝐎𝐧𝐥𝐢𝐧𝐞 𝐅𝐨𝐮𝐧𝐝𝐚𝐭𝐢𝐨𝐧 𝐂𝐨𝐮𝐫𝐬𝐞 (𝐏𝐫𝐞𝐥𝐢𝐦𝐬 + 𝐌𝐚𝐢𝐧𝐬) 𝐏𝐞𝐧𝐝𝐫𝐢𝐯𝐞 𝐌𝐨𝐝𝐞:
👉 For 𝐟𝐞𝐞, 𝐀𝐝𝐦𝐢𝐬𝐬𝐢𝐨𝐧 and 𝐨𝐭𝐡𝐞𝐫 𝐝𝐞𝐭𝐚𝐢𝐥𝐬 of this course download the 𝐃𝐫𝐢𝐬𝐡𝐭𝐢 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠 𝐀𝐩𝐩 from this link: bit.ly/3bqTzjH
👉 To know the 𝐝𝐞𝐭𝐚𝐢𝐥𝐬 𝐨𝐫 𝐭𝐨 𝐫𝐞𝐠𝐢𝐬𝐭𝐞𝐫 through our website click on this link: bit.ly/2JF1cJx
👉 𝐓𝐨 𝐠𝐞𝐭 𝐭𝐡𝐞 𝐝𝐞𝐭𝐚𝐢𝐥𝐬 about this 𝐖𝐡𝐚𝐭𝐬𝐀𝐩𝐩 𝐨𝐫 𝐒𝐌𝐒 "𝐆𝐒" on this number: 𝟗𝟑𝟏𝟏𝟒𝟎𝟔𝟒𝟒𝟐
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𝐏𝐞𝐧𝐝𝐫𝐢𝐯𝐞 𝐂𝐨𝐮𝐫𝐬𝐞𝐬 (𝐇𝐢𝐧𝐝𝐢 𝐋𝐢𝐭𝐞𝐫𝐚𝐭𝐮𝐫𝐞 𝐚𝐧𝐝 𝐈𝐀𝐒 𝐏𝐫𝐞𝐥𝐢𝐦𝐬):
👉 For 𝐟𝐞𝐞, 𝐀𝐝𝐦𝐢𝐬𝐬𝐢𝐨𝐧 and 𝐨𝐭𝐡𝐞𝐫 𝐝𝐞𝐭𝐚𝐢𝐥𝐬 of 𝐏𝐞𝐧𝐝𝐫𝐢𝐯𝐞 𝐂𝐨𝐮𝐫𝐬𝐞 (Hindi Literature and IAS Prelims): bit.ly/2vGNj72
👉 𝐃𝐞𝐦𝐨 𝐜𝐥𝐚𝐬𝐬 playlist- bit.ly/2qyY1cW
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👉 𝐏𝐫𝐞𝐥𝐢𝐦𝐬 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞 𝐒𝐞𝐫𝐢𝐞𝐬 की पुस्तकें (संपूर्ण सेट एक साथ) खरीदने के लिये निम्नलिखित लिंक्स का प्रयोग करें:
𝐃𝐫𝐢𝐬𝐡𝐭𝐢 𝐖𝐞𝐛𝐬𝐢𝐭𝐞: bit.ly/30LLMbt
𝐀𝐦𝐚𝐳𝐨𝐧: amzn.to/2VqvH8S
𝐅𝐥𝐢𝐩𝐤𝐚𝐫𝐭: bit.ly/3odDQtv
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👉 𝐐𝐮𝐢𝐜𝐤 𝐁𝐨𝐨𝐤 𝐒𝐞𝐫𝐢𝐞𝐬 की पुस्तकें (संपूर्ण सेट एक साथ) खरीदने के लिये निम्नलिखित लिंक्स का प्रयोग करें:
𝐃𝐫𝐢𝐬𝐡𝐭𝐢 𝐖𝐞𝐛𝐬𝐢𝐭𝐞: bit.ly/36u5qwD
𝐀𝐦𝐚𝐳𝐨𝐧: amzn.to/3lvMjGX
𝐅𝐥𝐢𝐩𝐤𝐚𝐫𝐭: bit.ly/37lO3NS
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👉 𝐌𝐚𝐢𝐧𝐬 𝐂𝐚𝐩𝐬𝐮𝐥𝐞 𝐒𝐞𝐫𝐢𝐞𝐬 की पुस्तकें खरीदने के लिये निम्नलिखित लिंक्स का प्रयोग करें:
𝐃𝐫𝐢𝐬𝐡𝐭𝐢 𝐖𝐞𝐛𝐬𝐢𝐭𝐞: bit.ly/2L0efWP
𝐀𝐦𝐚𝐳𝐨𝐧: amzn.to/2HYgpF9
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👉 𝐑𝐀𝐒 𝐒𝐞𝐫𝐢𝐞𝐬 की पुस्तकें खरीदने के लिये निम्नलिखित लिंक्स का प्रयोग करें:
𝐃𝐫𝐢𝐬𝐡𝐭𝐢 𝐖𝐞𝐛𝐬𝐢𝐭𝐞: bit.ly/35hpX6T
𝐅𝐥𝐢𝐩𝐤𝐚𝐫𝐭: bit.ly/380zfWu
𝐀𝐦𝐚𝐳𝐨𝐧: amzn.to/3bbxw2L
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𝐅𝐨𝐫 𝐕𝐢𝐝𝐞𝐨 𝐮𝐩𝐝𝐚𝐭𝐞𝐬 𝐟𝐨𝐥𝐥𝐨𝐰 𝐮𝐬 𝐨𝐧 :
👉 Facebook : / drishtiiasyo. .
👉 Twitter : / drishtivideos
👉 Instagram : / drishtiias
👉 Telegram : t.me/drishtiiasofficial
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👉 𝐎𝐮𝐫 𝐑𝐞𝐠𝐮𝐥𝐚𝐫 𝐘𝐨𝐮𝐓𝐮𝐛𝐞 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐬' 𝐏𝐥𝐚𝐲𝐥𝐢𝐬𝐭𝐬:
1. Videos by Dr. Vikas Divyakriti: bit.ly/2TF34TZ To
2. Concept Talk- By Dr. Vikas Divyakirti: goo.gl/xNVMrm
3. Current News Bulletin: goo.gl/TRiKpS
4. In News: bit.ly/2VsYdqt
5. Today's GK: goo.gl/qYva9T
6. To The Point- Special: bit.ly/2UwSbpv
7. Audio Article: goo.gl/MV1BRW
8. UPSC PT Prelims Practice Quiz: bit.ly/3fWGwch
9. National/International Organisations: goo.gl/iXHNNM
10. Sarkari Yojanayen: goo.gl/92Xdef
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👉 डेली न्यूज़ एनालिसिस: goo.gl/aaLjjK
👉 डेली करेंट अफेयर्स टेस्ट: goo.gl/PFwJ21
👉 प्रैक्टिस टेस्ट: goo.gl/nKY3fu
👉 लोकसभा और राज्यसभा टीवी डिबेट: goo.gl/hmtXgv
👉 मैप के माध्यम से अध्ययन: goo.gl/4TsnpC
👉 डेली मेंस आंसर राइटिंग प्रैक्टिस: goo.gl/3i5NXD

[@UPSCTarget1]

Thanks for the Drishti IAS team 🙏🙏🙏

[@ajaychaudhary2210]

🙏sir, aap ki Team ne kafi try kiya hm logo ki help krne ki, thanks for it, aasha krta hu ki 30 /9 ko exam hone ke bad 68th BPSC ke liye v aap ka prayas jari rhega.

[@pramodkumar8667]

Thanks team drishti for BPSC

[@hasnainfaridi]

Hamare exam ko easy bnane ke liye Aapka ,keval Krishna panday sir ka , Gitanjali ma'am ka Aur team' drishti ka bahot bahot shukriya

[@anuppandey251]

Sir बस एक request हैं की एक वीडियो आर्थिक समीक्षा और बजट पर बन जाय स्पेशल बिहार पर 🙏🙏🙏🙏

[@parwezmusharraf13]

Bilkul sir

[@MantuKumar-xc6xt]

Ji sir

[@vishalkumarsingh121]

राइट

[@bimaleshchaubey6731]

Bilkul sir

[@kum505]

Right

[@nishaprajapati235]

Thank you very much
Respected
Sir
And all of you
Team Dristi IAS
🙏🙏🙏🙏🙏🙏

[@danishreza2540]

Thanks Drishti Team

[@madhurikumari8692]

Thank you team drishti

[@manoj-8057]

Thanks a lot of drishti team 🙏

[@ChandanKumar-gi6qx]

Thank you drishti PCS sir

[@BpnKr]

thankyou sir...really needed Science related video

[@saritapaswan4760]

Thanku sir aise hi Bihar current batate rahiye.

[@niharikasingh2380]

Answer - A
Splendid session sir 🙏

[@angelarya9981]

Thank you so much Sir be continue. 🙏🙏

[@vandyworldelectronics7962]

Amazing video sir explanation bahut accha hai

[@anshutiwari4986]

Thank you very much sir 🙏

[@PritiSingh-mc5mx]

Thank uu Sir.... Ar v subject k lye aise videos le k aaiye.... 🙏

[@knowledgewithentertain2794]

Superb session sir zabardast fantastic

[@kingkobra7330]

Thanks sir
Great session
Great teacher
Option-A

[@sadyactivity9706]

Thank u sir nd dristi team 🙏 😊 and ans is k2Cr2O7 nd H2so4

[@shimpysingh6070]

Bahot bahot dhanyawad sir 🙏🙏🙏

[@pathaan5816]

Thanku so much sir bahut achhi video ❤

[@AmanKumar-mm7vu]

Plz bring some more sessions like this . Thanks team drishti pcs.

[@priyankashah2738]

Yes

[@saifalam9481]

बहुत बहुत धन्यावाद

[@skjpsj3780]

Thank you❤ very very much sir😇
Very helpful session 🙏🙏🙏

[@Shresthomfoooo4041]

Thanks mujhe apne aap ko pahchanne ke liye..... great

[@amitkumaryadav2777]

Very nice session
Option A is correct answer

[@jyotimishra6630]

Excellent way of teaching

[@NitishDiwakar]

Ye lo beti, ashirwad lo

[@NoorAlam-cl7fc]

Outstanding sir
Kafi achha session tha
Option -A

[@NitishDiwakar]

Ye lo beta, ashirwad lo

[@sandhyakumari2867]

Option -A . thanks sir 🙏🙏for the rivision.

[@bhawanakumari8632]

Science ka best class 🙏🙏

[@user-es8pl6ty5l]

Jai Guru Dev ji 🙏

[@bittu.singh.]

Thank you so much

[@niteshmishra9933]

ध्यन हैं, प्रभु आप एवं आपकी पूरी टीम ......🙏🙏

[@nitusharma7135]

Thank you so much sir 🙏🙏🙏🙏🙏🙏🙏

[@kabitakumari4982]

Thanks sir🙏🙏

[@raneeraj5021]

Thank you

[@nitusharma7135]

Thank you so much sir 🙏🙏🙏🙏🙏

[@vandyworldelectronics7962]

A.thankyou so much sir 🙏🙏👍❤️💞❤️❤️

[@omkumar6234]

👌👌👌🙏🙏👌👌🙏 outstanding work

[@shivshaktias78]

A very nice sir thanks....

[@shwetasakshi]

Option : A
पोटेशियम डाइक्रोमेट - सल्फ्यूरिक अम्ल
Thank you sir

[@TechnicalVlogs_27]

Right answer

[@kumari68]

Thank you so much sir

[@rohitkumarsingh7799]

Thanks sir

[@kum505]

Nice sessions sir ji

[@umairkibria1573]

Filter paper for alcohal - potassium di-cromate - sulpheric acid

[@Delhi_imran]

Option A is right ans
Thanks sir 🙏

[@PrabhakarKumar]

Thanks for the video

[@nirraj1992]

Potassium Dichromate- It acts as a oxidising agent in presence of acid

[@shrimanfools]

Bahut top padhate ho aap sir

[@abhinaveducationadda683]

Dristi channel se best koy channel nahi hai dristi sander jabardast jindabad hai jio

[@kalpananirala2653]

Thanks sir
Last question ka answer -A

[@AdvAvikanshChaurasiya06020]

Thanks sir g 👏👏👏

[@jaypalkumar7551]

thanks 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

[@HariShankar-yf8di]

one time watch material. This covers around 20 MCQs from PYQs, not exhaustive or comprehensive study source for science preparation.

[@murarimishra147]

Opinion. A. Thankyou sir

[@RanjeetKumar-zx7qj]

पोटेशियम डाइक्रोमेट,सल्फ्यूरिक एसिड

[@maabhawanifragrance9804]

Last question ka answer - option (A) 💯💯💯🙋‍♀️🙋‍♀️

[@DivyaBharti-st3dq]

Option A is right answer 👍👍
Thank you so much for nice session sir 🙏🙏

[@talentzonekv]

Nice explanation...
एक विनम्र निवेदन है..... यदि आप बाक़ी options का भी विश्लेषण करें तो अति उत्तम होगा ।।

[@arshal9369]

One big request to the drishti team.Please questions ko Hindi+English dono me rakhe🙏.Thank you

[@EXAMTIME-to4he]

Option A
Thank🙏 u sir

[@mukeshkashish482]

Hamare deputy CM Tejaswi se aapka face mil rha sir ji 😂...baaki session is good with best explanation ..🙏

[@RAKESHKUMAR-ov8ox]

(A)Poteshiyam dikromet-Salphuric acid

[@bharti2811]

पोटैसियम dichromate -Sulphuric acid test.

[@FuntimestatusR]

Potassium daicromet - sulphur

[@kanchanajaiswal4426]

Osm class ...🙏🙏🙏 sir .& teaching ...👌👌
Sir please sabhi option ko explain kare . 3:24

[@pushpeshrajshaw......1026]

sir first question ka answer E hoga bcoz haddi ka orthologist hoga and osteologist kankal tantra ka hota hai

[@deepshikhakushwaha8710]

A. पोटेशियम डाइक्रोमेट -सल्फ्यूरिक अम्ल

[@kumarkunal66]

Plzz sir bahut aacha hai isko pura karwa diziye

[@MONUKUMAR70046]

पोटेशियम डाइक्रोमेट सल्फ्यूरिक अम्ल

[@SonakshiKumari-qd4bs]

Ok sir

[@ncertgyan5405]

Option A Potassium dichromate and sulphuric acid ka mixture

[@mithileshmishra651]

Option A
Potassium Diacromet

[@guidance8070]

Potassium dicromate - sulphuric acid

[@PrabhakarKumar]

Thanks for this, please provide these in English too

[@ashokjatav0955]

Pottassium diecromet - सल्फ्यूरिक एसिड

[@filmyblockbuster9258]

Option A Potassium Diachromate

[@RahulPandey-cq5ou]

पोटेशियम डाइक्रोमेट-सल्फ्यूरिक एसिड
One more class sir 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

[@AnitaKumari-dc1rl]

Sir! Ek bar science marathon karwa dijiye please.

[@anshupriya2919]

options a potassium diceomate salphuric acid

[@KaushalKumar-ug1pp]

Option- A..... 🙏🙏🙏🙏

[@nverma5285]

Vitamin wale question ka ans bpsc ne E diya hai a/c to bpsc orange me thodi quantity me B1 v hota hai .

[@AmitGreenLife]

Economic survey aur Budget pr v please video bna digiye sir...

[@dontom942]

Sir please... Videos ko bilingual rkhe...question hindi english dono me show kre aur explain hindi me.

[@ajeet_pal6889]

Answer of the day _पोटैशियम डाइक्रोमेट-सल्फ्यूरिक अम्ल

[@pandey3753]

Guru jii Chrn sprsh

[@ChandanKumar-fo7dx]

Option a is correct

[@muskansingh4546]

Option:A
Thank you sir

[@bittu.singh.]

Right

[@bittu.singh.]

Potassium dichromate

[@r.ksingh4654]

Option-A

[@Vikash11165]

सर polity economy ko current ke sath ek class लीजिए

[@rohitkumarsingh7799]

Potassium dycromate + sulphuric acid

[@theskumar01]

Please make a video
Economic Survey and budget on Bihar
Please
Please

[@pooja_test_prep]

Option A is the right answer

[@user-yu7de2im1c]

Yes sir

[@jahanviduvey6314]

🙏🙏

[@Atifbpsc]

Ans ,A potessium dicromate

[@0andymount]

Potassium dichromate and sulphuric acid

[@SandeepKumar-el7gt]

Correct option is a
For alcohol detection police used potassium dichromate sulphuric acid

[@neetujadhav1340]

Sir 🙏🙏🙏🙏🙏🙏🙏🙏