Practice Question and Answer
8Q: 6 boys and 8 girls can do job in 10 days , 26 boys & 48 women do work in 2 days. Find time taken by 15 boys and 20 girls to do same work ? 2383 05b5cc74ae4d2b4197774fadb
5b5cc74ae4d2b4197774fadb- 12 daysfalse
- 23 daysfalse
- 34 daystrue
- 45 daysfalse
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Answer : 3. "4 days"
Explanation :
Answer: C) 4 days Explanation: One day work of 6 boys and 8 girls is given as 6b + 8g = 1/10 -------->(I) One day work of 26 boys and 48 women is given as 26b + 48w = 1/2 -------->(II) Divide both sides by 2 in (I) and then multiply both sides by 5 Now we get, 15b + 20g = 1/4. Therefore, 15 boys and 20 girls can do the same work in 4 days.
Q: What are long chains of Carbon Molecules called 2383 05b5cc6b8e4d2b4197774d699
5b5cc6b8e4d2b4197774d699- 1Ribosomesfalse
- 2Hydrocarbonsfalse
- 3Polymerstrue
- 4Nonefalse
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Answer : 3. "Polymers"
Explanation :
Answer: C) Polymers Explanation: A small organic molecule (sugars or amino acids), several of which may be bonded together to form a chain called a polymer.
Q: The memory power of man is comparable to that of computer?
2382 0613894e75ee3b079c60b49a8
613894e75ee3b079c60b49a8- 1Generaltrue
- 2highfalse
- 3lowfalse
- 4Averagefalse
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Answer : 1. "General"
Q: The fastest growing plant is ______ ? 2382 05b5cc6cde4d2b4197774e1b3
5b5cc6cde4d2b4197774e1b3- 1Ashokafalse
- 2Banyanfalse
- 3Eucalyptustrue
- 4Rosefalse
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Answer : 3. "Eucalyptus"
Explanation :
Answer: C) Eucalyptus Explanation:
Q: What color is Lobster blood? 2382 05b5cc6a0e4d2b4197774ca33
5b5cc6a0e4d2b4197774ca33- 1Bluetrue
- 2Whitefalse
- 3Redfalse
- 4Colourlessfalse
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Answer : 1. "Blue"
Explanation :
Answer: A) Blue Explanation: Lobsters, like snails and spiders, have blue blood due to the presence of hemocyanin, which contains copper. In contrast, vertebrates and many other animals have red blood from iron-rich hemoglobin.
Q: In a certain code language ‘over and above’ is written as ‘da pa ta’ and ‘old and beautiful’ is written as ‘sa na pa;. How is ‘over’ written in that code language?
2382 05da012ac77652578d4ef1475
5da012ac77652578d4ef1475- 1dafalse
- 2tafalse
- 3nafalse
- 4da or tatrue
- 5None of thesefalse
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Answer : 4. "da or ta"
Q: Which of the following is a chemical property? 2382 05b5cc619e4d2b4197774b723
5b5cc619e4d2b4197774b723- 1Reactivitytrue
- 2Solubilityfalse
- 3Densityfalse
- 4All of the abovefalse
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Answer : 1. "Reactivity"
Explanation :
Answer: A) Reactivity Explanation: The ability of two or more substances to combine to form other substances is called Reactivity.
Q: Select from the five alternative diagrams, the one that best illustrates the relationship among the three classes : Truck, Ship, Goods 2382 05b5cc7f2e4d2b41977751e66
5b5cc7f2e4d2b41977751e66- 11false
- 23true
- 34false
- 45false
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Answer : 2. "3"
Explanation :
Answer: B) 3 Explanation: Truck and Ship are entirely different. But some Goods are carried by some Trucks and some Goods are carried by some Ships.