IIT JEE Practice Question and Answer
8Q: On 24th Nov, 2007 Thursday falls. What day of the week was it on 10th Nov, 2006 ? 2440 05b5cc75ce4d2b4197774fc20
5b5cc75ce4d2b4197774fc20- 1Wednesdaytrue
- 2Tuesdayfalse
- 3Fridayfalse
- 4Thursdayfalse
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Answer : 1. "Wednesday"
Explanation :
Answer: A) Wednesday Explanation: The year 2006 is an ordinary year. So, it has 1 odd day.So, the day on 24th Nov, 2007 will be 1 day beyond the day on 24th Nov, 2006.But, 24th Nov, 2007 is Thursday. 24 - 10 = 14 days. Therefore, 2 weeks ago it is same day. Thus, 10th Nov, 2006 is one day before 10th Nov, 2007 i.e. it is Wednesday.
Q: Chilling is most commonly practiced by 2437 05b5cc6b8e4d2b4197774d64d
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Answer :
Explanation :
Chilling is most commonly practiced by Food Handlers like restaurents, hotels,... Chilling or Cooling is nothing but preserving the food in a cool storage like refrigerators.
Q: Name a common greenhouse gas containing only hydrogen and oxygen? 2437 05b5cc699e4d2b4197774c675
5b5cc699e4d2b4197774c675- 1CH4false
- 2O3false
- 3H2Otrue
- 4NOfalse
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Answer : 3. "H2O"
Explanation :
Answer: C) H2O Explanation: The common greenhouse gas containing only hydrogen and oxygen is H2O, this is water vapor. The common greenhouse gases are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. The composition (chemical formula) of those gases are: Water vapor: H2OCarbon dioxide: CO2Methane: CH4Nitrous oxide: NOOzone: O3. As you see the only one of those that contains only hydrogen and oxygen is H2O, water vapor.
Q: What kind of tree can you carry in your hand? 2436 05b5cc651e4d2b4197774bcfe
5b5cc651e4d2b4197774bcfe- Show AnswerHide Answer
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Answer :
Explanation :
Palm tree.
Q: A rise in general level of prices may be caused by 2435 05b5cc619e4d2b4197774b728
5b5cc619e4d2b4197774b728- 1an increase in the money supplyfalse
- 2an increase in the effective demandfalse
- 3a decrease in the aggregate level of outputfalse
- 4All of the abovetrue
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Answer : 4. "All of the above"
Explanation :
Answer: D) All of the above Explanation: All the three statements lead to either increase in demand of goods and services or decrease in the supply. This leads to increase in general level of prices.
Q: What does a VLAN do? 2434 05b5cc6a2e4d2b4197774cb8f
5b5cc6a2e4d2b4197774cb8f- 1Breaks up broadcast domains in a layer 2 switch internetworktrue
- 2Provides multiple broadcast domains within a single collision domainfalse
- 3Provides multiple collision domains on one switch portfalse
- 4Acts as the fastest port to all serversfalse
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Answer : 1. "Breaks up broadcast domains in a layer 2 switch internetwork"
Explanation :
Answer: A) Breaks up broadcast domains in a layer 2 switch internetwork Explanation: virtual LAN (VLAN) is any broadcast domain that is partitioned and isolated in a computer network at the data link layer (OSI layer 2). LAN is the abbreviation for local area network and in this context, virtual refers to a physical object recreated and altered by additional logic. VLANs work by applying tags to network packets and handling these tags in networking systems – creating the appearance and functionality of network traffic that is physically on a single network but acts as if it is split between separate networks. In this way, VLANs can keep network applications separate despite being connected to the same physical network, and without requiring multiple sets of cabling and networking devices to be deployed.
Q: The average of the ages of Sumit, Krishna and Rishabh is 43 years and the average of the ages of Sumit, Rishabh and Rohit is 49 years. If Rohit is 54 years old, what is Krishna'a age ? 2434 05b5cc71be4d2b4197774f4f4
5b5cc71be4d2b4197774f4f4- 148 yrsfalse
- 242 yrsfalse
- 340 yrsfalse
- 436 yrstrue
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Answer : 4. "36 yrs"
Explanation :
Answer: D) 36 yrs Explanation: Let present ages of Sumit=w, Krishna=x, Rishabh=y and Rohit=z , thenw+x+y = 43x3 = 129 ---(i) andw+y+z = 49x3 = 147 ---(ii)Subtracting (i) from (ii), (w+y+z) - (w+x+y)=147 -129 , z- x =18 ---(iii)Given Rohit's age => z = 54, so from (iii), x = 54-18 = 36
Q: 'A' sold an article to 'B' at a profit of 20%. 'B' sold the same article to 'C' at a loss of 25% and 'C' sold the same article to 'D' at a profit of 40%. If 'D' paid Rs 252 for the article, then find how much did 'A' pay for it? 2433 05b5cc75ee4d2b4197774fca2
5b5cc75ee4d2b4197774fca2- 1Rs.196false
- 2Rs.210false
- 3Rs.200true
- 4Rs.235false
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Answer : 3. "Rs.200"
Explanation :
Answer: C) Rs.200 Explanation: Let the article costs 'X' to ACost price of B = 1.2XCost price of C = 0.75(1.2X) = 0.9XCost price of D = 1.4(0.9X) = 1.26X = 252Amount paid by A for the article = Rs. 200.

