📘 BCHET-141🌐 English Medium🗓️ 2026⚡ Instant Download
IGNOU BCHET-141 Solved Assignment 2026 (English Medium)
IGNOU BCHET-141 (Analytical Methods in Chemistry) ki January 2026 & July 2026 session ki solved assignment — English medium mein, sabhi 20 questions ke answers aur 24 pages ki PDF. Payment karo, PDF turant download karo aur topic aasaani se samjho. 📖
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📌 Programme: BSCG (B.Sc. General) · Course: BCHET-141 — Analytical Methods in Chemistry · Session: January 2026 & July 2026 · Last date: 30 Apr 2026 (Jan 2026) / 31 Oct 2026 (Jul 2026), as per IGNOU portal.
📋 PDF Details
| 📄 PDF Details — BCHET-141 | |
|---|---|
| 🏷️ Course code | BCHET-141 — Analytical Methods in Chemistry |
| 🎓 University | IGNOU |
| 📚 Programme | BSCG |
| 🗓️ Session | January 2026 & July 2026 |
| 🌐 Medium | English |
| ❓ Questions | 20 (sab solved) · total 100 marks |
| 📄 Pages | 24 pages (PDF file se gine hue) |
| 💾 Format | PDF · printable A4 · instant download |
| 👀 Free preview | Pehle 2 pages upar product images mein |
| 💰 Price | ₹29 |
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✅ Sabhi 20 questions solved
English medium · 24 pages — 2026 session ke assignment ke sawaal.
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📝 Questions covered
IGNOU BCHET-141 assignment (January 2026 & July 2026) ke ye sawaal is PDF mein solved hain:
- Q1. Give the details of the preservation techniques used for water samples. 5 marks
- Q2. A sample was analyzed for desired constituent having 3.67 g as the true value. The results of three measurements were 3.70 g, 3.74 g, and 3.77 g. Find the error of the mean (mean error), the percent relative error and the relative accuracy of the mean of the measurements. 5 marks
- Q3. Give the differences between t-test and F-test with the help of suitable examples. 5 marks
- Q4. With the help of suitable examples differentiate between the terms-distribution coefficient and distribution ratio. 5 marks
- Q5. Give the mechanism of extraction by solvation. 5 marks
- Q6. With the help of suitable equations explain the method solvent extraction with Diphenythiocarbazone. 5 marks
- Q7. Give the advantages of using continuous extraction? 5 marks
- Q8. With the help of a suitable diagram explain development of chromatogram along with the use of standard samples. 5 marks
- Q9. How does surface area of the stationary phase affect the separation in coloumn chromatography? What should be the sample to absorbent ratio so that clear separations are obtained? 5 marks
- Q10. What are the different types of ion exchangers? Give examples of a strong cation exchanger and a strong anion exchanger alongwith their specific functional groups. 5 marks
- Q11. A mixture of CaO and CaCO 3 is analysed by TGA. The result indicates that mass of the sample decreases from 320.8 mg to 230.6 mg only between 650°C and 850°C. Calculate the percentage of calcium carbonate in the mixture. 5 marks
- Q12. Explain the method of pH metric titrations. Draw the different types of pH titration curves and show how equivalence points can be found from them 5 marks
- Q13. From the following data, calculate the molar conductivity of NaCl in aqueous solution: Conductivity of 4.0 × 10-4 mol dm-3 NaCl solution = 6.20 × 10-3 S m⁻¹ Conductivity of the water = 0.05 × 10-3 S m⁻¹. 5 marks
- Q14. With the help of suitable diagrams explain the typical conductometric titration curves for the following:
a) Strong acid with a strong base
b) Strong acid with a weak base
c) Precipitation titration 5 marks - Q15. At 298 K, the limiting molar ionic conductivities of K ⁺ and Cl⁻ ions are 73.5 and 76.3 S cm² mol⁻¹ respectively. Calculate:
(a) the transport number of K⁺ ions, and
(b) the transport number of Cl⁻ ions. 5 marks - Q16. An infrared radiation has a frequency of 8 gigahertz.
(a) Calculate the energy of a photon corresponding to this radiation.
(b) Determine the wavelength of the radiation. (Given h = 6.626 × 10⁻³⁴ J s and 1 gigahertz = 10⁹ Hz) 5 marks - Q17. With the help of a suitable diagram explain the absorption of radiation causing
(a) transitions in rotational energy levels
(b) transitions in vibrational energy levels of the molecule. 5 marks - Q18. (a) What is the role of absorbing species in UV-VIS spectra? What are its different types?
(b) The molar absorptivity of a substance is 1.5 × 10 4cm‒1 mol‒1 dm3. Calculate the transmittance through a cuvette of path length 4.0 cm containing 3.0 × 10‒6 mol dm‒3 solution of the substance. 5 marks - Q19. (a) What are the different types of IR spectrometers? Mention any one advantage of FT-IR spectrometer.
(b) What are the characteristic stretching frequencies for the following:
i) carboxylic acids ii) amides iii) nitroalkanes 5 marks - Q20. Briefly compare the instrumentations for flame atomic absorption spectrophotometry and flame atomic emission spectrophotometry. 5 marks
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❓ FAQ — aksar pooche jaane wale sawaal
Q. Kya ye BCHET-141 ki 2026 session wali assignment hai?
Haan. Ye IGNOU BCHET-141 assignment (January 2026 & July 2026 session) ke questions par based hai. Har question solved hai.
Q. PDF kis medium mein hai?
Ye PDF English medium mein hai. Kharidne se pehle check kar lein ki aapki assignment ka medium bhi yahi hai.
Q. PDF mein kitne pages / questions hain?
PDF mein 24 A4 pages hain (file se gine hue) aur sabhi 20 questions solved hain.
Q. Payment ke baad PDF kaise milegi?
Razorpay se secure payment (UPI, card ya net banking) karein. Download link payment ke turant baad screen par aata hai aur aapke email par bhi bheja jaata hai.
Q. Kya main ye answers seedha submit kar sakta/sakti hoon?
Nahi. Ye independent reference/study material hai, IGNOU ka official material nahi. Topic samjhein aur assignment apne words mein likhein.
Q. Ye assignment kis programme ke liye hai?
Ye IGNOU BCHET-141 (Analytical Methods in Chemistry) ka January 2026 & July 2026 session (valid 1 Jan – 31 Dec 2026) ka tutor-marked assignment hai, jo BSCG (B.Sc. General) programme mein aata hai. Questions official IGNOU English PDF (BCHET-141-Eng-2026.pdf) se liye gaye hain.
Q. PDF ka price kitna hai?
Sirf ₹29 flat. Koi coupon ya hidden charge nahi — UPI, card ya net banking se pay karein aur turant download karein.
Q. Assignment submit karne ki last date kya hai?
IGNOU portal ke anusaar January 2026 session ke liye 30 Apr 2026 aur July 2026 session ke liye 31 Oct 2026. Extension ke liye IGNOU website zaroor check karein.
Q. Kharidne se pehle sample kaise dekhein?
Product images mein PDF ke pehle 2 pages free preview ke roop mein diye gaye hain — quality aur format pehle check kar lein.
Q. Kya numericals aur reactions bhi solved hain?
Haan. Total 100 marks ke sabhi 20 questions (Part A + Part B) solved hain — numericals step-by-step, reactions/mechanisms aur definitions ke saath. PDF 24 pages ki hai.