CUET · CHEMISTRY · PYQ PAPER 2023
Match List I with List II
| LIST I | LIST II |
| A. Zone refining | I. Dressing of ZnS |
| B. Froth floatation process | II. Extraction of Au |
| C. Cyanide process | III. of AIExtraction |
| D. Electrolytic reduction | IV. Ultrapure Ge |
- A A-III, B-I, C-II, D-IV
- B A-IV, B-I, C-II, D-III
- C A-I, B-II, C-III, D-IV
- D A-IV, B-I, C-III, D-II
Answer & Solution
Correct Answer
(B) A-IV, B-I, C-II, D-III
Step-by-step Solution
Detailed explanation
A. Zone refining \(\rightarrow\) IV. Ultrapure Ge B. Froth floatation process \(\rightarrow\) I. Dressing of ZnS C. Cyanide process \(\rightarrow\) II. Extraction of Au D. Electrolytic reduction \(\rightarrow\) III. Extraction of Al
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from CHEMISTRY
- Match the items of List - I and List - II
List - I (Item) List - II (Definition/Term) (A) Instantaneous Rate (I) rate constant (B) Average Rate (II) rate law (C) Mathematical expression for rate of reaction in terms of concentration of reactants (III) Short interval of time (D) Rate of reaction for zero order reaction is equal to (IV) long direction of time
Choose the correct answer from the options given below:CUET 2023 Hard - Read the passage below and answer the question:
The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed as adsorption. There are two types of adsorption. In physisorption, attractive forces are mainly Van der Waals while in chemical adsorption adsorbate is held with chemical bonds adsorbent. Adsorption increases with increase in pressure and decreases as temperature is increased.
Which of the following is not application of adsorption?CUET 2023 Medium - The dark purple crystals of potassium permanganate are isostructural with:CUET 2023 Hard
- Which one of the following does not correctly represent the correct order of the property indicated against it?CUET 2023 Hard
- Which of the following effectively inhibits the growth of tumours?CUET 2025 Hard
- A solution of copper sulphate cannot be stored in zinc vessel because:CUET 2023 Medium
More PYQs from CUET
- Read the following passage carefully and answer the given questions.
Some strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes). B. thuringiensis forms protein crystals during a particular phase of their growth. Transgenic animals that produce useful biological products can be created by the introduction of the portion of DNA (or genes) which codes for a particular product such as human protein (a-1-antitrypsin) used to treat emphysema. In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk (2.4 grams per litre). The milk contained the human alpha-lactalbumin and was nutritionally a more balanced product for human babies than natural cow-milk. A nematode Meloidegyne incognitia infects the roots of tobacco plants and causes a great reduction in yield. A novel strategy was adopted to prevent this infestation which was based on the process of RNA interference (RNAi). This method involves silencing of a specific mRNA due to a complementary dsRNA molecule that binds to and prevents translation of the mRNA (silencing). Biopiracy is the term used to refer to the use of bio-resources by multinational companies and other organisations without proper authorisation from the countries and people concerned without compensatory payment. ELISA is based on the principle of antigen-antibody interaction. Infection by pathogen can be detected by the presence of antigens (proteins, glycoproteins, etc.) or by detecting the antibodies synthesised against the pathogen.
ELISA is based on the principle of:CUET 2025 Hard - When radiation is incident on a metal surface of work function \( \Phi_0 \), photoelectrons are emitted with some maximum kinetic energy \( K \). If the frequency of the incident radiation is doubled, then the maximum kinetic energy of the emitted photoelectrons will becomeCUET 2025 Easy
- Brain capacities of Homo erectus was around:CUET 2023 Medium
- If the matrix \(\left(\begin{array}{ccc}2 & 4 & 5 \\ 4 & 2 & 3 \\ K & 3 & 2\end{array}\right)\) is a symmetric matrix, then the value of \(K\) is :CUET 2023 Easy
- Common oxidation state of lanthanoids is:CUET 2025 Hard
- Bases of RNA are -CUET 2023 Medium