Practice Question and Answer
8Q: The ratio of present ages of Hema and Chinnu is 13:17. Four years ago the ratio of their ages was 11:15. What will be the ratio of their ages six years hence ? 2022 05b5cc736e4d2b4197774f86f
5b5cc736e4d2b4197774f86f- 13 : 7false
- 27 : 9false
- 34 : 5true
- 41 : 3false
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Answer : 3. "4 : 5"
Explanation :
Answer: C) 4 : 5 Explanation: Let their present ages be 13x and 17x.Then, 13x-4/17x-4 = 11/15. Solving this, we get x = 2.Required ratio = 13x2 + 6/17x2 + 6 = 32/40 = 4/5.
Q: Which of the following kits is a social animal?
2022 15ee837d1a08a50198d8cf86f
5ee837d1a08a50198d8cf86f- 1Beetrue
- 2Mosquitofalse
- 3Burfalse
- 4Domestic flyfalse
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Answer : 1. "Bee"
Explanation :
The social animal among the options is:
(A) Bee
Explanation:
Bees are known for their highly organized and social behavior. They live in colonies where individuals have specific roles such as workers, drones, and a queen. They communicate with each other, work together for the common good of the colony, and have a complex social structure. In contrast, mosquitoes, bur (assuming it refers to burrowing animals), and domestic flies are not typically considered social animals in the same way as bees. Bees, especially honeybees, are well-known for their intricate social organization and cooperation within the colony.
Q: Which of the following acts introduced a communal electorate in India?
2021 0632afb9c4ada076be65da82f
632afb9c4ada076be65da82f- 1Indian Council Act, 1861false
- 2Indian Council Act, 1892false
- 3Indian Council Act, 1909true
- 4Government of India Act, 1935false
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Answer : 3. "Indian Council Act, 1909"
Q: 02 September is celebrated as which day worldwide?
2021 05f51bdc244c458098b32bb66
5f51bdc244c458098b32bb66- 1World safety dayfalse
- 2World friendship dayfalse
- 3World Coconut Daytrue
- 4World victory dayfalse
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Answer : 3. "World Coconut Day"
Q:Change the voice in the sentences given below by selecting the correct alternative:
Many serious accidents are caused by negligence.
2021 05e6a510aee03046acc587d33
5e6a510aee03046acc587d33- 1Negligence has caused many serious accidents.false
- 2Negligence causes many serious accidents.true
- 3Negligence causing many serious accidents.false
- 4Negligence is causes many serious accidentfalse
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Answer : 2. "Negligence causes many serious accidents. "
Q: _____ is known as India's Spice Garden.
2021 05f15667bcf79540a75341020
5f15667bcf79540a75341020- 1Karnatakafalse
- 2Keralatrue
- 3Maharashtrafalse
- 4Rajasthanfalse
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Answer : 2. "Kerala "
Q: Negative divided by Negative 2021 05b5cc6aae4d2b4197774cf2e
5b5cc6aae4d2b4197774cf2e- 1-vefalse
- 2+vetrue
- 30false
- 4Can't be determinedfalse
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Answer : 2. "+ve"
Explanation :
Answer: B) +ve Explanation: We know the Mathematical rules that ++ = ++- = --+ = --- = +
Q: What is the oxidation number of sulfur in H2S? 2021 05b5cc645e4d2b4197774bb8b
5b5cc645e4d2b4197774bb8b- 12false
- 2-2true
- 31false
- 4-1false
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Answer : 2. "-2"
Explanation :
Answer: B) -2 Explanation: The sum of the oxidation numbers in a compound must equal zero. In the compound hydrogen sulfide, H2S, the two hydrogen atoms have an oxidation number of +1, for a total of +2. Therefore, the oxidation number of sulfur in the compound is -2, and the sum of the oxidation numbers is 0.