Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

Expand CERN.

  1. European Organization for Nuetron Research

  2. European Organization for Natural Research

  3. European Organization for Nuclear Research

  4. European Organization for Nuclear particle Research
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

CERN stands for European Organization for Nuclear Research. This is the correct expansion of the acronym. The options with 'Nuetron', 'Natural', and 'Nuclear particle' are incorrect spellings or additions.

Multiple choice general knowledge science & technology

What happened on Sept 10,2008 with regard to LHC?

  1. CERN successfully fired the first protons around the entire tunnel circuit in stages

  2. CERN started the first run of experiments with lead ions

  3. End of the run with lead ions. Shutdown until early 2011.

  4. First modest high-energy collisions planned but postponed due to accident.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

On September 10, 2008, CERN successfully fired the first protons around the entire LHC tunnel circuit in stages. This was a major milestone in the commissioning of the LHC. The first high-energy collisions and lead ion runs came later. The shutdown option is also incorrect.

Multiple choice general knowledge science & technology

The term hadron in LHC refers to..

  1. Particles composed of protons

  2. Particles composed of quarks

  3. Particles composed of electrons

  4. Particles composed of nuetrons
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hadrons are composite particles made of quarks held together by the strong nuclear force, classified into baryons (three quarks, like protons and neutrons) and mesons (quark-antiquark pairs). Option A incorrectly limits hadrons to just protons, while electrons (option C) are leptons, not hadrons.

Multiple choice general knowledge science & technology
  1. Hepatitis B is several times more infectious than HIV / AIDS. 2. Hepatitis B can cause liver cancer. Which of the statement given above is/are correct?

  1. 1 only

  2. 2 only

  3. both 1 and 2

  4. neither 1 and 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Both statements are correct. Hepatitis B is significantly more infectious than HIV (estimated 10-100 times more contagious through blood contact) and is a major risk factor for liver cancer (hepatocellular carcinoma), especially in chronic carriers. The virus causes liver cirrhosis and cancer over decades of chronic infection.

Multiple choice general knowledge science & technology

Excessive release of the pollutant carbon monoxide (CO), into the air may produce a condition in which oxygen supply in the human body decreases. What causes this condition?

  1. When inhaled into the human body, CO is converted into CO2.

  2. The inhaled CO has much higher affinity for haemoglobin as compared to oxygen

  3. The inhaled CO destroys the chemical structure of haemoglobin.

  4. The inhaled CO adversely affects the respiratory centre in the brain.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

CO causes hypoxia because it has 200-250 times higher affinity for hemoglobin than oxygen, forming carboxyhemoglobin and preventing oxygen transport. Options A, C, and D are incorrect because CO is not converted to CO2, does not destroy hemoglobin structure, and primarily affects oxygen transport at the molecular level rather than the respiratory center in the brain.

Multiple choice general knowledge science & technology

Consider the following statements: 1. Every individual in the population is equally susceptible host for Swine Flu. 2. Antibiotics have no role in the primary treatment of Swine Flu. 3. To prevent the future spread of Swine Flu in the epidemic area, the swine (pigs) must all be culled. Which of the statement given above is/are correct?

  1. 1 and 2 only

  2. 2 only

  3. 2 and 3 only

  4. 1, 2 and 3
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice general knowledge science & technology

With regard to the transmission of the Human Immunodeficiency Virus, which one of the following statements is not correct?

  1. The chances of transmission from female to male are twice as likely as from male to female.

  2. The chances of transmission are more if a person suffers from other sexually transmitted infections.

  3. An infected mother can transmit the pregnancy, at childbirth and by breast feeding.

  4. The risk of contracting infection from transfusion of infected blood is much higher than an exposure to contaminated needle.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The risk of male-to-female transmission of HIV during sexual intercourse is actually higher than female-to-male transmission. Therefore, the statement claiming female-to-male transmission is twice as likely is incorrect.

Multiple choice general knowledge science & technology

What are the possible limitations of India in mitigating the global warming at present and in the immediate future? 1. Appropriate alternate technologies are not sufficiently available. 2. India can not invest huge funds in research and development. 3. Many developed countries have already set up their polluting industries in India. Which of the statements given above is/are correct?

  1. 1 and 2 only

  2. 2 only

  3. 1 and 3 only

  4. 1,2,3
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement 1 is correct - India lacks access to affordable clean technologies for renewable energy and emission reduction. Statement 2 is correct - India's R&D funding is limited compared to developed nations. Statement 3 is incorrect - while some polluting industries have moved to India, this is not listed as a primary limitation in climate mitigation discussions; technology transfer and funding are bigger constraints.