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: निम्नलिखित श्रृंखला में उस संख्या का चयन करें जो प्रश्न चिह्न (?) को प्रतिस्थापित कर सकती है।
16, 20, 29, 45, 70, ?
2109 0643e7f4b72ca731a993c8ac8
643e7f4b72ca731a993c8ac8- 1106true
- 2116false
- 396false
- 4126false
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Answer : 1. "106"
Q:Change into Indirect speech.
The teacher said to the boys. "Wait here till I return."
2109 05e5f790362abf16a39f906fb
5e5f790362abf16a39f906fb- 1The teacher told the boys to wait there till he returned.true
- 2The teacher told the boys that they should wait till her returns.false
- 3The teacher advised the boys not to wait for him till he returns.false
- 4The teacher requested the boys to wait for him till he returned.false
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Answer : 1. "The teacher told the boys to wait there till he returned. "
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: भारत में ____ के उत्पादन में उत्तर प्रदेश सबसे ऊपर है?
2108 15fed89290af48a69de4ce738
5fed89290af48a69de4ce738- 1गन्नाtrue
- 2चावलfalse
- 3जौfalse
- 4गेहूंfalse
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Answer : 1. "गन्ना"
Q: A एक साइकिल 20% लाभ पर B को बेच देता है । B इस साईकिल को 25% लाभ पर C को बेच देता है। यदि C 225 ₹ का भुगतान करता है, तो साइकिल पर A का लागत मूल्य ज्ञात करें ।
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 को दो भागों में इस प्रकार विभाजित किया जाता है कि पहले भाग के चौगुना और दूसरे भाग के पांच गुना का अनुपात 14 : 15 है। पहला भाग है।
2108 05f1e6fb23b87486bfc5383ba
5f1e6fb23b87486bfc5383ba- 136false
- 242true
- 330false
- 448false
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Answer : 2. "42"
Q: अंतर्राष्ट्रीय शिक्षा दिवस 2020 का विषय क्या है?
2108 05e2ff39d4cc562611feadd52
5e2ff39d4cc562611feadd52- 1शिक्षा: समावेशन और सशक्तिकरण के लिए एक प्रमुख चालकfalse
- 2परिवार, शिक्षा और भलाईfalse
- 3लोगों, ग्रह, समृद्धि और शांति के लिए सीखनाtrue
- 4स्वदेशी पीपुल्स शिक्षा का अधिकारउfalse
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