Practice Question and Answer
8Q: What is Primary Key in DBMS? 2109 05b5cc6afe4d2b4197774d27d
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Answer :
Explanation :
A primary key is a special relational database table column or combination of columns designated to uniquely identify all table records. That is, A primary key is a column or set of columns in a table that uniquely identifies tuples (rows) in that table. A primary key, also called a Primary Keyword. Main Features Primary key are :: It must contain a unique value for each row of data. It cannot contain null values.
Q: A field is in the form of an equilateral triangle of side 100 m. A horse is tied to a vertex of the field, with a 15 m long rope. Over what area can the horse graze?
2109 0600e8d0b377d750b4eb46a19
600e8d0b377d750b4eb46a19- 1117.85 m²true
- 2119.85 m²false
- 3117.35 m²false
- 4119.35 m2false
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Answer : 1. "117.85 m² "
Q: Who established the Visva-Bharati University?
2109 05f2280534ab50b169747fc4a
5f2280534ab50b169747fc4a- 1Rabindranath Tagoretrue
- 2Raja Rammohan Royfalse
- 3Bankim Chandra Chatterjeefalse
- 4None of thesefalse
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Answer : 1. "Rabindranath Tagore"
Q: What occurs during the digestion of protein? 2109 05b5cc694e4d2b4197774c4d5
5b5cc694e4d2b4197774c4d5- 1Specific hormones breakdown proteins into simple sugarsfalse
- 2Specific enzymes breakdown proteins into simple sugarsfalse
- 3Specific hormones breakdown proteins into complex starchesfalse
- 4Specific enzymes breakdown proteins into amino acidstrue
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Answer : 4. "Specific enzymes breakdown proteins into amino acids"
Explanation :
Answer: D) Specific enzymes breakdown proteins into amino acids Explanation: Protein digestion occurs in the stomach and duodenum in which 3 main enzymes: 1. Pepsin secreted by the stomach 2. Trypsin and 3. Chymotrypsin secreted by the pancreas Break down food proteins into polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids.
Q: In an election only two candidates A and B contested 30% of the voters did not vote and 1600 votes were declared as invalid. The winner, A got 4800 votes more than his opponent thus he secured 51% votes of the total voters on the voter list. Percentage votes of the loser candidate, B out of the total voters on the voter list is:
2108 0611e121308d7b65efee71f04
611e121308d7b65efee71f04- 13true
- 25false
- 35.6false
- 46.2false
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Answer : 1. "3"
Q: A sells a bicycle to B at a profit of 20%. B sells it to C at a profit of 25%. If C pays Rs. 225/- for it, the cost price of the bicycle for A is:
2108 05e205e5c5f8f8e395f8f1439
5e205e5c5f8f8e395f8f1439- 1Rs. 110 / -false
- 2Rs. 125 /-false
- 3Rs. 120 / -false
- 4Rs. 150 /-true
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Answer : 4. "Rs. 150 /-"
Q: 78 is divided into two parts in such a way that the ratio of quadruple of the first part and five times the second part is 14: 15. The first part is
2108 05f1e6fb23b87486bfc5383ba
5f1e6fb23b87486bfc5383ba- 136false
- 242true
- 330false
- 448false
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Answer : 2. "42"
Q: What is the theme of International Day of Education 2020?
2108 05e2ff39d4cc562611feadd52
5e2ff39d4cc562611feadd52- 1Education: A Key Driver for Inclusion and Empowermentfalse
- 2Families, education and well-beingfalse
- 3Learning for people, planet, prosperity, and peacetrue
- 4Indigenous Peoples' Right to Educationfalse
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