Free · past papers · answers included

General Science MCQ practice free online · page 192

Questions from RRB, NTPC, Group D and JE past papers. Tap an option to check it instantly — every question shows the correct answer, and most carry the explanation the paper gave.

All English हिन्दी

No sign-up10 per pageAnswers & explanations

1911APPSC2016General ScienceEnglish
Steps of Recombinant DNA technology are given below. 1. Identification and isolation of the genetic material. 2. Fragmentation of DNA. 3. Obtaining the foreign gene product. 4. Downstream processing. 5. Ligation of DNA fragmentation into the vector. 6. Isolation of desired DNA fragments. 7. Amplification of gene of interest. 8. Transfer of Recombinant DNA into the host cell/organism. The correct sequence of steps is
Show answerAnswer & explanation
Correct option: C — 1 → 2 → 6 → 7 → 5 → 8 → 3 → 4
1912UPSC2012General ScienceEnglish
With reference to ‘stem cells’, frequently in the news, which of the following statement(s) is/are correct? 1. Stem cells can be derived from mammals only. 2. Stem cells can be used for screening new drugs. 3. Stem cells can be used for medical therapies. Select the correct answer using the codes given below.
Show answerAnswer & explanation
Correct option: B — 2 and 3
1913UPSC1999General ScienceEnglish
Assertion (A): Insect resistant transgenic cotton has been produced by inserting Bt gene. Reason (R): The Bt gene is derived from a bacterium.
Show answerAnswer & explanation
Correct option: A — Both (A) and (R) are true and (R) is the correct explanation of (A)
1914UPSC2012General ScienceEnglish
Consider the given statements. 1. BT brinjal is created by inserting its genome, into the gene of soil fungus. 2. The seeds of BT brinjal one terminator seed so farmers have to buy it before every weather from seed companies. 3. This is also a fact that it can affect the user’s health negatively. 4. The other threat is that its insertion may affect adversely bio-diversity. Choose the right answer according to these code.
Show answerAnswer & explanation
Correct option: C — Only 3 and 4
1915UPSC2017General ScienceEnglish
With reference to agriculture in India, how can the technique of ‘genome sequencing’, often seen in the news, be used in the immediate future? 1. Genome sequencing can be used indentify genetic markers for disease resistance and drought tolerance in various crop plants. 2. This technique helps in reducing the time required to develop new varieties of crop plants. 3. It can be used to decipher the host-pathogen relationship in crops. Select the correct answer using the code given below.
Show answerAnswer & explanation
Correct option: D — 1, 2 and 3
Advertisement
1916UPSC2014General ScienceEnglish
Consider the following techniques/ phenomena. 1. Budding and grafting in fruit plants. 2. Cytoplasmic male sterility. 3. Gene silencing. Which of the above is/are used to create transgenic crops?
Show answerAnswer & explanation
Correct option: B — 2 and 3
1917UPSC2012General ScienceEnglish
Consider the following kinds of organisms. 1. Bacteria 2. Fungi 3. Flowering plants Some species of which of the above kinds of organisms are employed as bio-pesticides?
Show answerAnswer & explanation
Correct option: D — 1, 2 and 3
1918UPPSC2000General ScienceEnglish
Assertion (A): ‘Goldern rice’ is a biotechnological achievement to the benefit of consumers as much as the farmers. Reason (R): The yellow colour of this rice reflects a high level of beta carotene, a compound that is converted to vitamin A in the body.
Show answerAnswer & explanation
Correct option: A — Both (A) and (R) are true and (R) is the correct explanation of (A)
1919UPSC2000General ScienceEnglish
Assertion (A): In human being, the females play a major role in determining the sex of the offspring. Reason (R): Women have two ‘X’ chromosomes.
Show answerAnswer & explanation
Correct option: D — (A) is false, but (R) is true
1920UPSC2001General ScienceEnglish
Assertion (A): Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules. Reason (R): DNA fragments can be manipulated using restriction endonucleases and DNA ligases.
Show answerAnswer & explanation
Correct option: A — Both (A) and (R) are true and (R) is the correct explanation of (A)

General Science practice — common questions

Page 192 of this set has 10 questions on it.

Are these General Science questions free to practise?

Yes. Every question on this page is free and needs no account. Create a free account only if you want your progress saved.

Where do these General Science MCQs come from?

They are taken from official past papers of Indian government recruitment exams such as RRB NTPC, RRB Group D and RRB JE, and each question keeps a reference to the exam it appeared in.

Are the questions available in Hindi?

Yes. Many papers are set in both languages, so a large share of these questions are available in Hindi. Use the language filter at the top of the page.

Do the questions show answers and explanations?

Every question shows the correct option. Where the source paper included a worked solution, the explanation is shown under "Show answer".

General Science MCQ practice free online · page 192

Assertion (A): Insect resistant transgenic cotton has been produced by inserting Bt gene. Reason (R): The Bt gene is derived from a bacterium.

Consider the following techniques/ phenomena. 1. Budding and grafting in fruit plants. 2. Cytoplasmic male sterility. 3. Gene silencing. Which of the above is/are used to create transgenic crops?

Consider the following kinds of organisms. 1. Bacteria 2. Fungi 3. Flowering plants Some species of which of the above kinds of organisms are employed as bio-pesticides?

Assertion (A): ‘Goldern rice’ is a biotechnological achievement to the benefit of consumers as much as the farmers. Reason (R): The yellow colour of this rice reflects a high level of beta carotene, a compound that is converted to vitamin A in the body.

Assertion (A): In human being, the females play a major role in determining the sex of the offspring. Reason (R): Women have two ‘X’ chromosomes.

Assertion (A): Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules. Reason (R): DNA fragments can be manipulated using restriction endonucleases and DNA ligases.

General Science practice — common questions