IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Simplify the fraction? 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17) 1682 05b5cc6a5e4d2b4197774ccef
5b5cc6a5e4d2b4197774ccef- 1-4 (1/17)true
- 25 (2/17)false
- 3-2 (1/17)false
- 43 (3/17)false
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "-4 (1/17)"
व्याख्या :
Answer: A) -4 (1/17) Explanation: Given fraction is 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17) It can be written as (5 - 3 - 2 - 1) + (2/7 - 1/14 - 1/14 - 1/7) = ? + 3 (1/17) -1 + 0 - 3 (1/17) = ? => ? = -4 (1/17)
प्र: Find the odd man out of the number series? 18, 37, 76, 155, 314, 635 5430 05b5cc6a5e4d2b4197774cce0
5b5cc6a5e4d2b4197774cce0- 137false
- 2155false
- 3314false
- 4635true
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 4. "635"
व्याख्या :
Answer: D) 635 Explanation: Given Number series is 18 37 76 155 314 635 follows a pattern that, 18 18 x 2 +1 = 37 37 x 2 +2 = 76 76 x 2 +3 = 155 155 x 2 +4 = 314 314 x 2 +5 = 633 not 635 Hence, the odd man is 635.
प्र: Glass is made of the mixture of 1495 05b5cc6a5e4d2b4197774cce5
5b5cc6a5e4d2b4197774cce5- 1sand and silicatestrue
- 2quartz and sandfalse
- 3mica and quartzfalse
- 4mica and silicatesfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "sand and silicates"
व्याख्या :
Answer: A) sand and silicates Explanation: A glass is made of liquid sand. You can make glass by heating ordinary sand and made into a liquid and mix with silicates to form a glass.
प्र: Metals are good conductors of electricity because 1628 05b5cc6a5e4d2b4197774ccd6
5b5cc6a5e4d2b4197774ccd6- 1The atoms are lightly packedfalse
- 2They contain free electronstrue
- 3They have high melting pointfalse
- 4All the abovefalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 2. "They contain free electrons"
व्याख्या :
Answer: B) They contain free electrons Explanation: Metal particles are held together by strong metallic bonds, which is why they have high melting and boiling points. The free electrons in metals can move through the metal, allowing metals to conduct electricity. Because the electrons in the atom's higher energy levels can separate from the atoms easily, they can be pulled out with very little energy. Because the molecular structure of the metal is such that 'free electrons' are free to move, thus being categorized as electrically conductive. For example, copper is used for electrical wiring because it is a good conductor of electricity.
प्र: Can character data be stored in computer memory? 2102 15b5cc6a5e4d2b4197774ccdb
5b5cc6a5e4d2b4197774ccdb- 1Yes---a primitive data type is used to store characterstrue
- 2No---computer memory can only store patternsfalse
- 3Yes---characters are stored in special memoryfalse
- 4No---computers can only store numbersfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "Yes---a primitive data type is used to store characters"
व्याख्या :
Answer: A) Yes---a primitive data type is used to store characters Explanation:
प्र: Rangaswamy Cup is associated with 1402 05b5cc6a5e4d2b4197774ccd1
5b5cc6a5e4d2b4197774ccd1- 1Footballfalse
- 2Badmintonfalse
- 3Cricketfalse
- 4Hockeytrue
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 4. "Hockey"
व्याख्या :
Answer: D) Hockey Explanation:
प्र: If a barometric reading is falling, this usually indicates what 1566 05b5cc6a5e4d2b4197774ccc6
5b5cc6a5e4d2b4197774ccc6- 1Increasing pressurefalse
- 2Decreasing pressuretrue
- 3No pressurefalse
- 4Nonefalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 2. "Decreasing pressure"
व्याख्या :
Answer: B) Decreasing pressure Explanation: A barometer is a tool that measures air pressure A rising barometer indicates increasing air pressure, a falling barometer indicates decreasing air pressure. In space, there is a nearly complete vacuum, so the air pressure is zero.
प्र: What kind of apple isn't an apple? 1363 05b5cc6a5e4d2b4197774cccb
5b5cc6a5e4d2b4197774cccb- 1Pineappletrue
- 2Akero applefalse
- 3Adanac applefalse
- 4Aceymac applefalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "Pineapple"
व्याख्या :
Answer: A) Pineapple Explanation: Except pineapple remaining all three are types of apples. Pineapple is what kind of apple isn't an apple.

