Practice Question and Answer
8Q: Permanent Hardness of water can be removed by adding 2056 05b5cc6a4e4d2b4197774cc8b
5b5cc6a4e4d2b4197774cc8b- 1Bleaching powderfalse
- 2Chlorinefalse
- 3Wasshing sodatrue
- 4Potassium permanganatefalse
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Answer : 3. "Wasshing soda"
Explanation :
Answer: C) Wasshing soda Explanation: Hardness can be removed by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column. Hardness in water is caused by dissolved magnesium ions and calcium ions. These can get into the water when it comes into contact with limestone and other rocks that contain calcium compounds. This can happen, for example, when rainwater flows over these rocks on its way to a reservoir. Hardness in water is of two types. They are : 1. Temporary hardness 2. Permanent hardness 1. Temporary hardness:: Temporary hardness is caused by dissolved calcium hydrogen carbonate. 2. Permanent hardness:: Permanent hardness is caused by dissolved calcium sulfate. Unlike temporary hardness, it is not removed by boiling the water.
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Answer : 3. "made a note of them"
Q: The year 1995 is the Golden Jubilee year of which of the following international organisations 2056 05c42e18cdd518553d9dd9568
5c42e18cdd518553d9dd9568- 1UNOtrue
- 2NAMfalse
- 3GATTfalse
- 4ASEANfalse
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Answer : 1. "UNO"
Q:Directions: Read each sentence to find out whether there is any grammatical error in it. The error if any will be in one part of the sentence, the number of that part will be the answer. If there is no error, mark (5) as the answer. (Ignore errors of punctuation, if any.)
Ancient artifacts are (1) / a part of global heritage (2) / and should not be (3) / sold to the highest bidder. (4) /No error. (5)
2056 05e3d0841e7f49706c74b5079
5e3d0841e7f49706c74b5079- 11false
- 22false
- 33false
- 44false
- 55true
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Answer : 5. "5"
Q: SAARC is observing a decade(1991-2000) of which of the following 2056 05c42e37ddd518553d9dd959c
5c42e37ddd518553d9dd959c- 1Girl childtrue
- 2Literacyfalse
- 3Health services to rural poorfalse
- 4Shelter for allfalse
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Answer : 1. "Girl child"
Q: Who was first Governor General of free India 2056 05c4ac96793448b2e9c887982
5c4ac96793448b2e9c887982- 1Linlithgowfalse
- 2Willingdonfalse
- 3Wavellfalse
- 4Mountbatentrue
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Answer : 4. "Mountbaten"
Q: A shopkeeper earns a profit of 10% after allowing a discount of 20% on the marked price. The cost price of the article whose marked price is Rs. 880, is 2056 15cf12064c97a225730e3b31a
5cf12064c97a225730e3b31a- 1Rs. 704false
- 2Rs. 640true
- 3Rs. 774false
- 4Rs. 680false
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Answer : 2. " Rs. 640"
Explanation :
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Q: Where was the Special Olympics World Games 2019 inaugurated?
2056 05da6ae9ff31c213e4d574531
5da6ae9ff31c213e4d574531- 1स्वीडनfalse
- 2ऑस्ट्रियाfalse
- 3जर्मनीfalse
- 4आबू धोबीtrue
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