IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: What element is found in all organic compounds? 1758 0

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    Hydrogen
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    Calcium
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    Nitrogen
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    Carbon
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उत्तर : 4. "Carbon"
व्याख्या :

Answer: D) Carbon Explanation: Carbon is found in all organic compounds.

प्र: What is the value of KL ? Statement A: K2= 4.Statement B: L = 0. 1758 0

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    Only A is sufficient
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    Only B is sufficient
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    Both (A) and (B) are sufficient
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    A) and (B) are sufficient D)
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उत्तर : 2. "Only B is sufficient"
व्याख्या :

Answer: B) Only B is sufficient Explanation: From statement B,  As the value of L = 0, the value of KL = 0. Hence only statement B is sufficient.

प्र: Which of the following is not a Fundamental Right? 1758 0

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    Right To Freedom Of Speech And Expression
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    Right To Employment
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    Right To Equality
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    Right To Education
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उत्तर : 2. "Right To Employment"
व्याख्या :

Answer: B) Right To Employment Explanation: Fundamental Rights are the basic rights of the common people and inalienable rights of the people who enjoy it under the charter of rights of Constitution of India.   The six fundamental rights recognised by the Indian constitution are:: the right to equality, right to freedom, right against exploitation, right to freedom of religion, cultural and educational rights, right to constitutional remedies.

प्र: An increase in the quantity demanded means that 1758 0

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    The demand curve shifted to right
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    Price of the product has declined
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    Increase in consumer income
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    All the above
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उत्तर : 4. "All the above"
व्याख्या :

Answer: D) All the above Explanation:

प्र: How many seconds will a 600 m long train take to cross a man walking with a speed of 7 km/hr in the direction of the moving train if the speed of the train is 67 km/hr ? 1758 0

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    29 sec
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    58 sec
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    36 sec
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    44 sec
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उत्तर : 3. "36 sec"
व्याख्या :

Answer: C) 36 sec Explanation: Speed of train relative to man = 67 - 7 = 60 km/hr.= 60 x 5/18 = 50/3 m/sec. Time taken to pass the man = 600 x 3/50 = 36 sec.

प्र: c with a line over it symbol means 1757 0

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    with
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    without
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    and
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    or
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उत्तर : 1. "with"
व्याख्या :

Answer: A) with Explanation: The letter “c” with a line over it is a medical abbreviation often used by doctors, nurses, and other medical professionals. The symbol looks like this: c̄. The c is almost always lower-case. This symbol actually has a very simple meaning. A c with a line over it just means “with”. This abbreviation is often used on patient charts and prescriptions, as well as information or notes written by medical professionals.

प्र: 'K' cycled from A to B at 10 kmph and returned at the rate of 9 kmph. 'L' cycled both ways at 12 kmph. In the whole journey 'L' took 10 minutes less than 'K'. Find the distance between A and B ? 1757 0

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    32.1 km
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    15.23 km
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    3.75 km
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    32.1 m
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उत्तर : 3. "3.75 km"
व्याख्या :

Answer: C) 3.75 km Explanation: Let 'd' be the distance between A and BK -time = d/10 + d/9 = 19d/90 hoursL -time = 2d/12 = d/6 hoursWe know that, 10 min = 1/6 hoursThus, time difference between K and L is given as 10 minutes. => 19d/90 - d/6 = 1/6=> (19d-15d)/90 = 1/6=> 4d/90 = 1/6Thus,d= 15/4 km = 3.75 km. hence the distance between A and B is 3.75 km.

प्र: 5/8 as a Decimal Equals To 1757 0

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    0.625
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    0.541
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    0.258
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    0.147
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उत्तर : 1. "0.625"
व्याख्या :

Answer: A) 0.625 Explanation: 5/8 is Nothing but to divide 5 into 8 parts.     As 5 is smaller than 8, the quotient starts with a decimal point to make 5 as 50 to be divisible by 8. (0.)     Now 50 goes for 6 times in 8 leaving a remainder 2. (0.6)      Again 2 is smaller than 8, As it already has decimal point in the quotient, now 2 becomes 20.      Now 20 goes for 2 times in 8 leaving a remainder 4. (0.62)      Again 4 is smaller than 8, As it already has decimal point in the quotient, now 4 becomes 40.     Now 40 goes for 5 times in 8 leaving a remainder 0. (0.625)     Therefore, the decimal value of 58 is 0.625.   Now find a decimal value of 1117 and Discuss your at Discuss.

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