IIT JEE Practice Question and Answer
8Q: Mahesh bought 100 kg of rice for Rs. 1040 and sold it at a loss of as much money as he received for 30 kg rice. At what price did he sell the rice? 1455 05b5cc6b3e4d2b4197774d3e3
5b5cc6b3e4d2b4197774d3e3- 1Rs. 7.46/kgfalse
- 2Rs. 8/kgtrue
- 3Rs. 8.74/kgfalse
- 4Rs. 8.56/kgfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Rs. 8/kg"
Explanation :
Answer: B) Rs. 8/kg Explanation: Let the selling price of the rice = Rs.P/kg Now, according to the question, 1040 - 100p = 30p => p = 8/kg Hence, the selling price of the rice = Rs. 8/kg
Q: How many Enzymes are there in the Human Body? 1646 05b5cc6b3e4d2b4197774d3dc
5b5cc6b3e4d2b4197774d3dc- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer :
Explanation :
There are nearly about 75000 enzymes of 3 classes are there in the human body. They are : 1. Metabolic Enzymes - Enzymes that help to run our Bodies 2. Digestive Enzymes - Enzymes that help in digesting Food 3. Food Enzymes - Enzymes from raw foods that start our Food digestion.
Q: Who Built The Suez Canal? 1364 05b5cc6b3e4d2b4197774d3dd
5b5cc6b3e4d2b4197774d3dd- 1Theodore Rooseveltfalse
- 2Ferdinand de Lessepstrue
- 3Robert Millsfalse
- 4James Hobanfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Ferdinand de Lesseps"
Explanation :
Answer: B) Ferdinand de Lesseps Explanation: The Suez Canal in Egypt, is a 101 mile long canal that connects the Mediterranean Sea with the Gulf of Suez, a northern branch of the Red Sea. It was built in 1869 by Ferdinand de Lesseps.
Q: Which of the following languages is a Slavic Language? 1611 05b5cc6b3e4d2b4197774d3d2
5b5cc6b3e4d2b4197774d3d2- 1Polishtrue
- 2Flemishfalse
- 3Romanianfalse
- 4Gaelicfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Polish"
Explanation :
Answer: A) Polish Explanation: Slavic languages, also called Slavonic languages, a subfamily of the Indo-European family of languages Eastern European ethnic group, commonly associated with Russia, the Baltic States, and other Eastern European countries. peoples of the lands of today's Eastern Europe and Russia have excited curiosity and beckoned visitors. Key to these peoples and cultures are the Slavic languages: 1. Russian, 2. Ukrainian, 3. Polish, 4. Czech, and 5. Bosnian/Croatian/Serbian. Flemish is the language of many Belgians. Romanians are more Hungarian or Balkans-affiliated than Russian. Gaelic is the language of the Celts (Scotland/Ireland).
Q: Is C2 Paramagnetic or Diamagnetic? 1682 05b5cc6b3e4d2b4197774d3d7
5b5cc6b3e4d2b4197774d3d7- 1Paramagneticfalse
- 2Diamagnetictrue
- 3Ferromagneticfalse
- 4Can't be determinedfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Diamagnetic"
Explanation :
Answer: B) Diamagnetic Explanation: Paramagnetic Molecules :: If the Electronic configuration of a molecule has any unpaired electrons, then that molecule is said to be Paramagnetic. Diamagnetic Molecules :: If the Electronic configuration of a molecule has only paired or spin paired electrons, then that molecule is said to be Diamagnetic. Here the molecule C2 has all paired electrons in its electronic configuration. So C2 is Diamagnetic. Whereas, B2 molecule has unpaired electrons. So B2 is Paramegnetic.
Q: Diameter of a Ping Pong Ball? 1890 05b5cc6b3e4d2b4197774d3cd
5b5cc6b3e4d2b4197774d3cd- 137 mmfalse
- 238 mmfalse
- 340 mmtrue
- 442 mmfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "40 mm"
Explanation :
Answer: C) 40 mm Explanation: The ball with which Table Tennis is played is called Ping Pong Ball. According to the International rules, the diameter of the ping pong ball must be not less than 39.5 millimeters and not greater than 40.5 millimeters having a mass of 2.7 grams.
Q: 9 girls working 7 hours a day can complete a piece of work in 15 day. In how many days can 6 girls working for 9 hours a day, complete the same piece of work? 1449 05b5cc6b3e4d2b4197774d3c8
5b5cc6b3e4d2b4197774d3c8- 135/4 daysfalse
- 217.5 daystrue
- 319 3/4 daysfalse
- 437/3 daysfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "17.5 days"
Explanation :
Answer: B) 17.5 days Explanation: Let the number of days be 'p' As the work is same, we know that M1 x D1 x H1 = M2 x D2 x H2 Where M = Men, D = Days, H = Hours per day Here M1 = 9, D1 = 15, H1 = 7 M2 = 6, D2 = p, H2 = 9 => 9 x 15 x 7 = 6 x p x 9 => p = 35/2 = 17.5 days.
Q: A water tank in a village is normally filled in 8 hours but takes 2 hours longer to fill because of a leak in its bottom. If the tank is full, in how many hrs will the leak empty it ? 2046 05b5cc6b2e4d2b4197774d3c3
5b5cc6b2e4d2b4197774d3c3- 134 hrsfalse
- 236 hrsfalse
- 338 hrsfalse
- 440 hrstrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "40 hrs"
Explanation :
Answer: D) 40 hrs Explanation: The time taken by the leak to empty the tank = 18 - 110 = 5 - 440 = 140 Therefore, the leak empties the tank in 40 hours.

