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Consider the following statements regarding e-waste
1. Pyro metallurgy and hydro metallurgy are the processes used to extract gold from e-waste
2. Pyro metallurgy is a process in which leaching chemicals are used.
3. Hydro metallurgy is a process to extract gold using high temperatures.
Select the incorrect statements

Only 1
Only 1 and 2
Only 2 and 3
All of the above
Explanation:

Pyro metallurgy is a process to extract gold using high temperature and hydro metallurgy is a process to in which leaching chemicals are used.
Additional Questions

Consider the following statements:
1. Orbital speed of a satellite is independent of its mass
2. Orbital speed of a satellite depends upon the radius of orbit (height of satellite from the surface of earth)
3. Period of revolution of a satellite is independent of its mass
4. Escape velocity is independent of the mass, shape and size of the body and its direction of projection
Which of the statements given above is/are correct?

Answer

Consider the following statements and select the incorrect statement/s from the codes given below:
1. The addition of detergent or soap decreases the viscosity of water and thus increases the cleaning ability
2. If a clean and dry needle is kept slowly on the surface of water, it floats due to surface tension of water
Choose the appropriate code:

Answer

Identify the incorrect pair/s from the following:
1. Biggest Solar Observatory : : Kodaikanal
2. National Remote Sensing Centre : : Mahendragiri
3. INSAT Master Control Facility : : Hassan
4. Indian Deep Space Network (IDSN) : : Byalalu
Choose the correct code:

Answer

Which among the following waves are examples of Electromagnetic waves?
1) X-rays 2) Gamma-rays 3) a-rays 4) ß-rays 5) Ultrasonic wave
Choose the appropriate code:

Answer

Consider the following statements in regard to India’s 3-stage Nuclear Power Programme:
1) The first stage Pressurised Heavy Water Reactors (PHWRs) use natural uranium as fuel and heavy water as moderator and coolant
2) The second stage Fast Breeder Reactors (FBRs) use plutonium (which is produced by irradiation of uranium-238) and liquid sodium as coolant
3) The third stage is based on the thorium-uranium-233 cycle. Uranium-233 is obtained by irradiation of thorium.
Which of the statements given above is/are correct?

Answer

Match List I with List II and select the correct answer using the code given below the Lists:
LIST – I LIST – II
A. Anupam-Ameya 1. BARC
B. PARAM Yuva 2. ISRO
C. SAGA 3. C-DAC
D. Vikram-100 4. Physical Research Laboratory
A-B-C-D

Answer

Which of the following are illustrations of total internal reflection?
1) Shining of air bubble in water
2) Sparkling of diamond
3) Increase in duration of sun’s visibility
4) Mirage and looming
5) Ophthalmoscope
Choose the appropriate code:

Answer

Which among the following statements is/are true in regard to DNA and RNA?
1) Sugar is deoxyribose type in DNA, whereas sugar is just ribose type in RNA
2) DNA is double stranded structure, whereas RNA is single stranded structure
3) DNA is found in both nucleus and cytoplasm, RNA is found only in nucleus
Which of the statements given above is/are correct?

Answer

Which among the following statements is/are true?
1) Apart from blood groups – O, A, B and AB, there is a special type of blood group (hh)
2) ‘A’ type blood can accept blood from ‘A’ type or ‘O’ type and not from ‘AB’ or ‘B’ type donors
3) The main reason behind the difference in blood of human is the glyco protein which is found in RBC called antigen
Which of the statements given above is/are correct?

Answer

Consider the following statements with regard to Atomic Energy Regulatory Board (AERB)
1) AERB is engaged in the development of nuclear power technology, applications of radiation technologies in the fields of agriculture, medicine, industry, and basic research.
2) The safety standards formulated by AERB are at par with those recommended by the international organisations such as the International Atomic Energy Agency (IAEA. and the International Commission on Radiological Protection (ICRP).
Choose the appropriate code from below:

Answer
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