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प्र: If price of rice increased by 25%, so that a man is can able to purchase 5 kg less rice in Rs. 500. Find the original price of rice per kg ? 2041 0

उत्तर : 1. "Rs. 20"
व्याख्या :
Answer: A) Rs. 20 Explanation: Let the original price of rice be Rs. x Let rice a man can buy for Rs. 500 at rs. x/kg be = R kgs From given data, for Rs. 500 x ---- R kgs (x + 25x/100) ---- (R - 5) kgs => Rx = (R - 5)(x + 25x/100) => Rx = (R - 5)(125x/100) => 100Rx = 125Rx - 625x => R = 25 So at rate of Rs. x/kg, man get 25 kgs for Rs. 500 => x = 500/25 = Rs. 20

प्र: DNA can be found in what Organelles? 2040 0

उत्तर : 1. "Chloroplasts and Mitichondria"
व्याख्या :
Answer: A) Chloroplasts and Mitichondria Explanation: DNA can be found in 3 Organelles namely Nucleus, Mitochondria in animals and Chloroplasts in plants.

प्र: Calculate the number of bricks, each measuring 25 cm x 15 cm x 8 cm required to construct a wall of dimensions 10 m x 4 cm x 6 m when 10% of its volume is occupied by mortar ? 2040 0

उत्तर : 1. "720"
व्याख्या :
Answer: A) 720 Explanation: Let the number of bricks be 'N' 10 x 4/100 x 6 x 90/100 = 25/100 x 15/100 x 8/100 x N 10 x 4 x 6 x 90 = 15 x 2 x N => N = 720.

प्र: Given that 100.48 = x, 100.70 = y and xz = y2, then the value of z is close to ___ ? 2040 0

उत्तर : 4. "2.9"
व्याख्या :
Answer: D) 2.9 Explanation: xz = y2 10(0.48z) = 10(2 x 0.70) = 101.40 0.48z = 1.40 z = 140/18 = 35/12 = 2.9 (approx.)

प्र: Which statement is NOT true about polymers? 2040 0

उत्तर : 3. "Polymers are complex molecules composed of random sequences of atoms"
व्याख्या :
Answer: C) Polymers are complex molecules composed of random sequences of atoms Explanation: Polymers are complex molecules composed of random sequences of atoms is the only statement which is not true regarding polymers.

प्र: The average age of a couple is 24 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child ? 2040 0

उत्तर : 1. "2 yrs"
व्याख्या :
Answer: A) 2 yrs Explanation: 29 x 2 = 5820 x 3 = 60 ----------- 2 years Therefore, the age of child is 2 years.

प्र: The outermost layer of the sun is called 2039 0

उत्तर : 1. "Corona"
व्याख्या :
Answer: A) Corona Explanation: The outermost layer of the sun is called The Corona. The inner layers are the Core, Radiative Zone and Convection Zone. The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona. IRIS will focus its investigation on the Chromosphere and Transition Region.

प्र: If Hema walks at 12 km/hr instead of 8 km/hr, she would have walked 20 km more. The actual distance travelled by Hema is ? 2037 0

उत्तर : 1. "40 kms"
व्याख्या :
Answer: A) 40 kms Explanation: Let the actual distance travelled be x km. Then x/8=(x+20)/12 => 12x = 8x + 160=> 4x = 160=> x = 40 km.

प्र: If price of rice increased by 25%, so that a man is can able to purchase 5 kg less rice in Rs. 500. Find the original price of rice per kg ? 2041 0

प्र: DNA can be found in what Organelles? 2040 0

उत्तर : 1. "Chloroplasts and Mitichondria"
व्याख्या :
Answer: A) Chloroplasts and Mitichondria Explanation: DNA can be found in 3 Organelles namely Nucleus, Mitochondria in animals and Chloroplasts in plants.

प्र: Calculate the number of bricks, each measuring 25 cm x 15 cm x 8 cm required to construct a wall of dimensions 10 m x 4 cm x 6 m when 10% of its volume is occupied by mortar ? 2040 0

उत्तर : 1. "720"
व्याख्या :
Answer: A) 720 Explanation: Let the number of bricks be 'N' 10 x 4/100 x 6 x 90/100 = 25/100 x 15/100 x 8/100 x N 10 x 4 x 6 x 90 = 15 x 2 x N => N = 720.

प्र: Given that 100.48 = x, 100.70 = y and xz = y2, then the value of z is close to ___ ? 2040 0

उत्तर : 4. "2.9"
व्याख्या :
Answer: D) 2.9 Explanation: xz = y2 10(0.48z) = 10(2 x 0.70) = 101.40 0.48z = 1.40 z = 140/18 = 35/12 = 2.9 (approx.)

प्र: Which statement is NOT true about polymers? 2040 0

प्र: The average age of a couple is 24 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child ? 2040 0

उत्तर : 1. "2 yrs"
व्याख्या :
Answer: A) 2 yrs Explanation: 29 x 2 = 5820 x 3 = 60 ----------- 2 years Therefore, the age of child is 2 years.

प्र: The outermost layer of the sun is called 2039 0

प्र: If Hema walks at 12 km/hr instead of 8 km/hr, she would have walked 20 km more. The actual distance travelled by Hema is ? 2037 0

उत्तर : 1. "40 kms"
व्याख्या :
Answer: A) 40 kms Explanation: Let the actual distance travelled be x km. Then x/8=(x+20)/12 => 12x = 8x + 160=> 4x = 160=> x = 40 km.

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प्र: If price of rice increased by 25%, so that a man is can able to purchase 5 kg less rice in Rs. 500. Find the original price of rice per kg ? 2041 05b5cc6c3e4d2b4197774dc31

प्र: DNA can be found in what Organelles? 2040 05b5cc6b5e4d2b4197774d506

उत्तर : 1. "Chloroplasts and Mitichondria" व्याख्या :Answer: A) Chloroplasts and Mitichondria Explanation: DNA can be found in 3 Organelles namely Nucleus, Mitochondria in animals and Chloroplasts in plants.

प्र: Calculate the number of bricks, each measuring 25 cm x 15 cm x 8 cm required to construct a wall of dimensions 10 m x 4 cm x 6 m when 10% of its volume is occupied by mortar ? 2040 05b5cc6d8e4d2b4197774e76e

उत्तर : 1. "720" व्याख्या :Answer: A) 720 Explanation: Let the number of bricks be 'N' 10 x 4/100 x 6 x 90/100 = 25/100 x 15/100 x 8/100 x N 10 x 4 x 6 x 90 = 15 x 2 x N => N = 720.

प्र: Given that 100.48 = x, 100.70 = y and xz = y2, then the value of z is close to ___ ? 2040 05b5cc6bee4d2b4197774d983

उत्तर : 4. "2.9" व्याख्या :Answer: D) 2.9 Explanation: xz = y2 10(0.48z) = 10(2 x 0.70) = 101.40 0.48z = 1.40 z = 140/18 = 35/12 = 2.9 (approx.)

प्र: Which statement is NOT true about polymers? 2040 05b5cc696e4d2b4197774c541

प्र: The average age of a couple is 24 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child ? 2040 05b5cc6d6e4d2b4197774e665

उत्तर : 1. "2 yrs" व्याख्या :Answer: A) 2 yrs Explanation: 29 x 2 = 5820 x 3 = 60 ----------- 2 years Therefore, the age of child is 2 years.

प्र: The outermost layer of the sun is called 2039 05b5cc6a5e4d2b4197774cd04

प्र: If Hema walks at 12 km/hr instead of 8 km/hr, she would have walked 20 km more. The actual distance travelled by Hema is ? 2037 05b5cc6d9e4d2b4197774e802

उत्तर : 1. "40 kms" व्याख्या :Answer: A) 40 kms Explanation: Let the actual distance travelled be x km. Then x/8=(x+20)/12 => 12x = 8x + 160=> 4x = 160=> x = 40 km.

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प्र: If price of rice increased by 25%, so that a man is can able to purchase 5 kg less rice in Rs. 500. Find the original price of rice per kg ? 2041 0

प्र: DNA can be found in what Organelles? 2040 0

उत्तर : 1. "Chloroplasts and Mitichondria"
व्याख्या :
Answer: A) Chloroplasts and Mitichondria Explanation: DNA can be found in 3 Organelles namely Nucleus, Mitochondria in animals and Chloroplasts in plants.

प्र: Calculate the number of bricks, each measuring 25 cm x 15 cm x 8 cm required to construct a wall of dimensions 10 m x 4 cm x 6 m when 10% of its volume is occupied by mortar ? 2040 0

उत्तर : 1. "720"
व्याख्या :
Answer: A) 720 Explanation: Let the number of bricks be 'N' 10 x 4/100 x 6 x 90/100 = 25/100 x 15/100 x 8/100 x N 10 x 4 x 6 x 90 = 15 x 2 x N => N = 720.

प्र: Given that 100.48 = x, 100.70 = y and xz = y2, then the value of z is close to ___ ? 2040 0

उत्तर : 4. "2.9"
व्याख्या :
Answer: D) 2.9 Explanation: xz = y2 10(0.48z) = 10(2 x 0.70) = 101.40 0.48z = 1.40 z = 140/18 = 35/12 = 2.9 (approx.)

प्र: Which statement is NOT true about polymers? 2040 0

प्र: The average age of a couple is 24 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child ? 2040 0

उत्तर : 1. "2 yrs"
व्याख्या :
Answer: A) 2 yrs Explanation: 29 x 2 = 5820 x 3 = 60 ----------- 2 years Therefore, the age of child is 2 years.

प्र: The outermost layer of the sun is called 2039 0

प्र: If Hema walks at 12 km/hr instead of 8 km/hr, she would have walked 20 km more. The actual distance travelled by Hema is ? 2037 0

उत्तर : 1. "40 kms"
व्याख्या :
Answer: A) 40 kms Explanation: Let the actual distance travelled be x km. Then x/8=(x+20)/12 => 12x = 8x + 160=> 4x = 160=> x = 40 km.