IIT JEE Practice Question and Answer
8Q: What is true about certificates of deposit? 1379 05b5cc63de4d2b4197774bb00
5b5cc63de4d2b4197774bb00- 1the money has to remain in the account for a specified period of timetrue
- 2they are the most liquid account availablefalse
- 3they offer lower interest rates than savings accountsfalse
- 4All the abovefalse
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Answer : 1. "the money has to remain in the account for a specified period of time"
Explanation :
Answer: A) the money has to remain in the account for a specified period of time Explanation: A certificate of deposit (CD) is a savings certificate with a fixed maturity date, specified fixed interest rate and can be issued in any denomination aside from minimum investment requirements. CD's are generally issued by commercial banks
Q: Four girls Robin, Mandy, Stacy, Erica of four families Miller, Jacob, Flure and Clark prepare four salads using the fruits Apples, cherries, bananas, grapes .Each girls uses 3 fruits in her salad. No body have the same combination. 1) Robin not a Miller girl uses apples.2) Miller and Mandy uses apples and cherries. 3) Clark uses cherries and grapes but Flure uses only one of them.4) Erica is not Clark nor Flure. Question : Give all combinations of Girls with their family and salads ? 1379 05b5cc70ee4d2b4197774f341
5b5cc70ee4d2b4197774f341- Show AnswerHide Answer
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Answer :
Explanation :
Out of 4 fruits, any 3 are chosen by 4 families.So the combinations areApple - A Cherries - C Banana - B Grapes - G1) ACB2) ACG3) BCG4) GAB By 2nd condition, Miller family uses either i)ACB or ii)ACGNow we have Robin, Mandy and Miller who uses apples (ACB,ACG,GAB)while Miller and Mandy both uses A and C. That leaves GAB for Robin. By 3rd condition Flure uses either C or G. So if we leave out the terms containing both C and G, we are left with ACB and GAB Now, for the time being let's suppose Robin is not a Flure.So ACB is taken by Flure. So ACG has to be Miller and that leaves BCG to be Clark. So we get Robin - Jacob(GAB). By 4th and 2nd conditions Erica and Mandy belong to the first two. That leaves Stacy - Clark(BCG). By 2nd condition Mandy is not a Miller, so we get Mandy - Flure(ACB) and that leaves Erica - Miller(ACG).
Q: K men agree to donate a gift of Rs. L to trust. If three men drop out how much more will each have to contribute towards the purchase of the gift ? 1379 05b5cc74fe4d2b4197774fb44
5b5cc74fe4d2b4197774fb44- 1L / (k-3)false
- 2k / (L-3)false
- 32K / 3L-Kfalse
- 43L / K(K-3)true
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Answer : 4. "3L / K(K-3)"
Explanation :
Answer: D) 3L / K(K-3) Explanation: Intial contribution = L/KAfter 3 men drop, then contribution =L/K-3The amount more to pay in contribution = LK-3 - LK = 3LK(K-3)
Q: Nucleotides are attached by bonds between the 1379 05b5cc658e4d2b4197774bda9
5b5cc658e4d2b4197774bda9- 1phosphates and sugarstrue
- 2nitrates and sugarsfalse
- 3nitrates and phosphatesfalse
- 4sugars and hydratesfalse
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Answer : 1. "phosphates and sugars"
Explanation :
Answer: A) phosphates and sugars Explanation: In DNA, adjacent nucleotides are linked by a phosphodiester bond: a covalent bond is formed between the 5' phosphate group of one nucleotide and the 3'-OH group of another. Hence, in this manner, each strand of DNA has a "backbone" of phosphate-sugar-phosphate-sugar-phosphate.
Q: In what ratio must a merchant mix two varieties of oils worth Rs. 60/kg and Rs. 65/kg, so that by selling the mixture at Rs. 68.20/kg, he may gain 10% ? 1378 05b5cc6c6e4d2b4197774de5e
5b5cc6c6e4d2b4197774de5e- 12:3false
- 24:3false
- 33:4false
- 43:2true
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Answer : 4. "3:2"
Explanation :
Answer: D) 3:2 Explanation: Let he mixes the oils in the ratio = x : y Then, the cost price of the oils = 60x + 65y Given selling price = Rs. 68.20 => Selling price = 68.20(x+y) Given profit = 10% = SP - CP => 10/100 (60x + 65y) = 68.20(x+y)-(60x + 65y) => 6x + 6.5y = 8.20x + 3.20y =>2.2x = 3.3y => x : y = 3 : 2
Q: Light travels slowest in 1378 05b5cc69de4d2b4197774c924
5b5cc69de4d2b4197774c924- 1Glasstrue
- 2Waterfalse
- 3Airfalse
- 4Vacuumfalse
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Answer : 1. "Glass"
Explanation :
Answer: A) Glass Explanation: Because the refractive index of glass is highest, light travels slowly in Glass. We know that the speed of light depends on the refraction index. The higher the index of refraction is, the slower the speed of light is. R.I of air and vacuum = 0 (air is a teeny bit more but can be taken as 0) R.I of water = 1.33 R.I of glass = 1.4. Hence, Light travels slowest in Glass.
Q: Who is the 14th President of India ? 1378 05b5cc6cfe4d2b4197774e2cd
5b5cc6cfe4d2b4197774e2cd- 1Meira Kumarfalse
- 2Sreedharanfalse
- 3Ram Nath Kovindtrue
- 4Vaidyanathanfalse
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Answer : 3. "Ram Nath Kovind"
Explanation :
Answer: C) Ram Nath Kovind Explanation: BJP-led NDA's presidential candidate Ram Nath Kovind registered an emphatic win over his rival and Opposition candidate Meira Kumar. Succeeding Pranab Mukherjee, Kovind sworn in as the 14th president of India on July 25, 2017.
Q: Which of the following is true about veins? 1378 05b5cc62ae4d2b4197774b8e6
5b5cc62ae4d2b4197774b8e6- 1Veins carry blood away from the heart, while arteries carry blood to the heart.false
- 2Veins are more muscular than arteries.false
- 3Veins have valves; arteries do not.true
- 4Veins have a smaller diameter lumen than arteries.false
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Answer : 3. "Veins have valves; arteries do not."
Explanation :
Answer: C) Veins have valves; arteries do not. Explanation: Veins are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart. Veins are less muscular than arteries and are often closer to the skin. There are valves in most veins to prevent backflow.

