IIT JEE Practice Question and Answer
8Q: Which of the following elements has the highest electronegativity? 1363 05b5cc62fe4d2b4197774b95f
5b5cc62fe4d2b4197774b95f- 1Chlorinefalse
- 2Brominefalse
- 3Fluorinetrue
- 4Heliumfalse
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Answer : 3. "Fluorine"
Explanation :
Answer: C) Fluorine Explanation: Electronegativity refers to the ability of an atom to attract shared electrons in a covalent bond. The higher the value of the electronegativity, the more strongly that element attracts the shared electrons. Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element and lithium is the least.
Q: Carbohydrates, lipids and proteins are classified as 1254 05b5cc62fe4d2b4197774b964
5b5cc62fe4d2b4197774b964- 1Macromoleculesfalse
- 2Biomoleculesfalse
- 3Macronutrientsfalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: Carbohydrates, together with lipids, proteins and nucleic acids, are one of the four major classes of biologically essential organic molecules found in all living organisms. They not only provide energy for vital metabolic reactions but also supply the building materials for normal structure, growth and repair. Your body needs relatively large quantities of carbohydrates, fats and protein for optimal function, hence their classification as macronutrients.
Q: Which colony was farthest north? 1288 05b5cc62fe4d2b4197774b959
5b5cc62fe4d2b4197774b959- 1Massachusettstrue
- 2Virginiafalse
- 3Georgiafalse
- 4New Hampshirefalse
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Answer : 1. "Massachusetts"
Explanation :
Answer: A) Massachusetts Explanation: There are 13 colonies and are ruled by England. The farthest north colony - Massachusetts The farthest south colony - Georgia The oldest colony - Virginia The colony between the 2 parts of Massachusetts - New Hampshire
Q: Which best summarizes the concept of natural selection? 2095 05b5cc62fe4d2b4197774b954
5b5cc62fe4d2b4197774b954- 1the fittest organisms survive and reproducetrue
- 2an organism will always adapt to its environmentfalse
- 3an organism will always mutate to survivefalse
- 4a mutation always makes a species fitterfalse
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Answer : 1. "the fittest organisms survive and reproduce"
Explanation :
Answer: A) the fittest organisms survive and reproduce Explanation: Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.
Q: Sandalwood is largely found in 1656 05b5cc62fe4d2b4197774b94e
5b5cc62fe4d2b4197774b94e- 1Indiatrue
- 2Japanfalse
- 3Chinafalse
- 4Nepalfalse
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Answer : 1. "India"
Explanation :
Answer: A) India Explanation: Sandalwood is largely found in India and they are government owned and their harvest is controlled. Naturally grown sandalwood can be easily found in Karnataka, Tamilnadu, Andhra, Kerala, Gujarat, Madhya Pradesh, and U.P. Manipura and in some other states of India.
Q: What always works with something in its eye? 1138 05b5cc62fe4d2b4197774b94d
5b5cc62fe4d2b4197774b94d- Show Answer
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Answer :
Explanation :
A Needle works when it has thread in its eye that is in its tiny hole.
Q: Which best matches the description with the genetic material? 2430 05b5cc62ce4d2b4197774b943
5b5cc62ce4d2b4197774b943- 1Chromosomes are located in the cytoplasm.false
- 2DNA is located in the nucleus.true
- 3Nucleotides form a helical structure that is called a gene.false
- 4Chromosomes create genes.false
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Answer : 2. "DNA is located in the nucleus."
Explanation :
Answer: B) DNA is located in the nucleus. Explanation: DNA is the genetic material in the cell. Hence, option B) DNA is located in the nucleus best matches the description with the genetic material.
Q: What can be swallowed but can swallow you? 1280 05b5cc62ce4d2b4197774b93d
5b5cc62ce4d2b4197774b93d- Show Answer
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Answer :
Explanation :
Your Pride. Yes, you can swallow your pride or it can swallow you.