Oxygen percentage (by weight) in atmospheric air is (A) 19 (B) 21 (C) 23 (D) 29

Oxygen percentage (by weight) in atmospheric air is
(A) 19
(B) 21
(C) 23
(D) 29
by

1 Answer

Answer :

(C) 23
by

Related questions

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Description : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Last Answer : 22

On weight basis, air contains following parts of oxygen  (a) 21  (b) 23  (c) 25  (d) 73  (e) 79.

Description : On weight basis, air contains following parts of oxygen  (a) 21  (b) 23  (c) 25  (d) 73  (e) 79.

Last Answer : Answer : b

Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about (A) 9 : 1 (B) 17 : 1 (C) 23 : 1 (D) 29 : 1

Description : Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about (A) 9 : 1 (B) 17 : 1 (C) 23 : 1 (D) 29 : 1

Last Answer : (B) 17 : 1

the mode of the data 21, 26, 22, 29, 23, 29, 26, 29, 22, 23 is?

Description : the mode of the data 21, 26, 22, 29, 23, 29, 26, 29, 22, 23 is?

Last Answer : the mode of the data 21, 26, 22, 29, 23, 29, 26, 29, 22, 23 is?

21, 23, 29, 53, 173, _____ a) 210 b) 893 c) 720 d) 253 e) 293

Description : 21, 23, 29, 53, 173, _____ a) 210 b) 893 c) 720 d) 253 e) 293

Last Answer : Difference between each successive tam is factorial of number starting from 2, like 23-21 = 2, then 29-23 = 6 means 3!, then 53-29 = 24 means 4!, then next difference is 173-53 = 120 means 5!, so next difference would be 6! i.e. 720 so term will be 173+720 = 893. Answer: b)

In a Examination a candidate has to score minimum of 24 marks inorder to clear the exam. The maximum that he can score is 40 marks. Identify the Valid Equivalance values if the student clears the exam. A. 22,23,26 B. 21,39,40 C. 29,30,31 D. 0,15,22

Description : In a Examination a candidate has to score minimum of 24 marks inorder to clear the exam. The maximum that he can score is 40 marks. Identify the Valid Equivalance values if the student clears the exam. A. 22,23,26 B. 21,39,40 C. 29,30,31 D. 0,15,22

Last Answer : C. 29,30,31

The marks obtained by 15 students in an examination are given below : 40, 20, 24, 19,20, 35, 12, 48, 29, 40, 45, 48, 42, 23, 35. Find the average mark

Description : The marks obtained by 15 students in an examination are given below : 40, 20, 24, 19,20, 35, 12, 48, 29, 40, 45, 48, 42, 23, 35. Find the average mark

Last Answer : The marks obtained by 15 students in an examination are given below : 40, 20, 24, 19,20, 35, 12, ... , 23, 35. Find the average mark of the students.

What is the rule that describes this pattern 2,3,5,7,11,13,17,19,23,29?

Description : What is the rule that describes this pattern 2,3,5,7,11,13,17,19,23,29?

Last Answer : The first ten odd numbers

A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and standard deviation. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14, 12, 26, 17, 18 a. 20.50, 5.79 b. 20.50, 5.94 c. 20.85, 5.79 d. 20.85, 5.94

Description : A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and standard deviation. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14, 12, 26, 17, 18 a. 20.50, 5.79 b. 20.50, 5.94 c. 20.85, 5.79 d. 20.85, 5.94

Last Answer : Katie earned 84,92,84,75 and 70 on her first 5 tests. What is the minimum grade Katie needs to earn on the next test to have a mean of 84?

In a post-office, stamps of three different denominations of Rs 7, Rs 8, Rs 10 are available. The exact amount for which one cannot buy stamps is (A) 19 (B) 20 (C) 23 (D) 29

Description : In a post-office, stamps of three different denominations of Rs 7, Rs 8, Rs 10 are available. The exact amount for which one cannot buy stamps is (A) 19 (B) 20 (C) 23 (D) 29

Last Answer : Answer: A

Insulin is a dimmer. The number of amino acids in the A and B chain respectively is (A) 19 and 28 (B) 21 and 30 (C) 25 and 35 (D) 29 and 38

Description : Insulin is a dimmer. The number of amino acids in the A and B chain respectively is (A) 19 and 28 (B) 21 and 30 (C) 25 and 35 (D) 29 and 38

Last Answer : Answer : B

The maximum percentage of CO2 in a flue gas (from a carbonaceous fuel) can be(A) 21(B) 77(C) 79(D) 29

Description : The maximum percentage of CO2 in a flue gas (from a carbonaceous fuel) can be (A) 21 (B) 77 (C) 79 (D) 29

Last Answer : (A) 21

On volume basis, air contains following parts of oxygen  (a) 21  (b) 23  (c) 25  (d) 77  (e) 79.

Description : On volume basis, air contains following parts of oxygen  (a) 21  (b) 23  (c) 25  (d) 77  (e) 79.

Last Answer : Answer : a

Which article of Indian Constitution provides for prevention of bonded labour? a) Article 19 b) Article 21 c) Article 23 d) Article 25

Description : Which article of Indian Constitution provides for prevention of bonded labour? a) Article 19 b) Article 21 c) Article 23 d) Article 25

Last Answer : c) Article 23

Suresh and Ramesh are twins. In a form by mistake, Suresh reverses the last 2 digits of his year of birth, and this makes him 9 years older than Ramesh. With this mistake, the sum of their ages in 2015 becomes 43. How old will Ramesh be 2021? a) 17 b) 19 c) 21 d) 23 e) 25

Description : Suresh and Ramesh are twins. In a form by mistake, Suresh reverses the last 2 digits of his year of birth, and this makes him 9 years older than Ramesh. With this mistake, the sum of their ages in 2015 becomes 43. How old will Ramesh be 2021? a) 17 b) 19 c) 21 d) 23 e) 25

Last Answer : Let the correct ages of Ramesh and Suresh be X in 2015 (since they are twins, they will have the same age) Given: 2x + 9 = 43 Or x = 17 years in 2015. Age in 2021 = 17 + 6 = 23 Note: year of birth = 2015 – 17 = 1998. Reversing, Suresh = 1989 or 9 year older. Answer: d)

Three consecutive numbers such that twice the first, 3 times the second and 4 times the third together make 182. The numbers in question are 1. 18, 22 and 23 2. 18, 19 and 20 3. 19, 20 and 21 4. 20, 21 and 22 5. 21, 22 and 23

Description : Three consecutive numbers such that twice the first, 3 times the second and 4 times the third together make 182. The numbers in question are 1. 18, 22 and 23 2. 18, 19 and 20 3. 19, 20 and 21 4. 20, 21 and 22 5. 21, 22 and 23

Last Answer : Answer- 3( 19,20,21) Explanation:- let number be x,x+1,x+2 2x + 3(x+1)+4(x+2)=180 x=19 so numbers are 19,20,21

The average age of A and B is 20 years. If C were to replace A, the average would be 19 and id C were to replace B,the average would be 21 . The ages of A, B and C are (in years) (a) 22, 17,16 (b) 22, 18, 20 (c) 30, 18, 15 (d) 23, 17 ,15

Description : The average age of A and B is 20 years. If C were to replace A, the average would be 19 and id C were to replace B,the average would be 21 . The ages of A, B and C are (in years) (a) 22, 17,16 (b) 22, 18, 20 (c) 30, 18, 15 (d) 23, 17 ,15

Last Answer : 22, 18, 20 Hint : A + B = 2 x 20 C + B = 2 x 19 A + C = 2 x 21

Recommended moisture contain for harvesting of paddy crop is between — percentage a. 21 to 23 b. 25 to 27 c. 10 to 15 d. 30 to 35

Description : Recommended moisture contain for harvesting of paddy crop is between — percentage a. 21 to 23 b. 25 to 27 c. 10 to 15 d. 30 to 35

Last Answer : a. 21 to 23

Volumetric ratio of N2 to O2 in dry atmospheric air is (A) 0.21 (B) 3.76 (C) 4.76 (D) 0.79

Description : Volumetric ratio of N2 to O2 in dry atmospheric air is (A) 0.21 (B) 3.76 (C) 4.76 (D) 0.79

Last Answer : (B) 3.76

Percentage of argon (by volume) in dry atmospheric air is about (A) 0.09 (B) 0.3 (C) 0.57 (D) 0.94

Description : Percentage of argon (by volume) in dry atmospheric air is about (A) 0.09 (B) 0.3 (C) 0.57 (D) 0.94

Last Answer : D) 0.94

Find the magnetic field intensity of a material with flux density of 24 units in air(in 10 6 order) a) 19.09 b) 21 c) 25 d) 26.78

Description : Find the magnetic field intensity of a material with flux density of 24 units in air(in 10 6 order) a) 19.09 b) 21 c) 25 d) 26.78

Last Answer : a) 19.09

Calculate the electric field due to a surface charge of 20 units on a plate in air(in 10 12 order) a) 2.19 b) 1.12 c) 9.21 d) 2.91

Description : Calculate the electric field due to a surface charge of 20 units on a plate in air(in 10 12 order) a) 2.19 b) 1.12 c) 9.21 d) 2.91

Last Answer : b) 1.12

Height of atmosphere, if atmospheric density is 1.29 kg m-3 and atmospheric pressure is 101 kPa, is A. 7839.4 m B. 7829.4 m C. 7849.4 m D. 7859.4 m

Description : Height of atmosphere, if atmospheric density is 1.29 kg m-3 and atmospheric pressure is 101 kPa, is A. 7839.4 m B. 7829.4 m C. 7849.4 m D. 7859.4 m

Last Answer : 7829.4 m

All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure. (A) Oxygen (B) Nitrogen (C) Air (D) Hydrogen

Description : All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure. (A) Oxygen (B) Nitrogen (C) Air (D) Hydrogen

Last Answer : (D) Hydrogen

is -29/16 or -42/23 wich on is more?

Description : is -29/16 or -42/23 wich on is more?

Last Answer : Since these are negative numbers, the smaller value is closer to zero and therefore "more" so -29/16 is more.

What is 23 plus 29?

Description : What is 23 plus 29?

Last Answer : 52

When a voltage of 95 VDC is applied to the illustrated circuit with a resistance of 10.23 kohms the current will be _______ . EL-0018 A. 9.29 milliamps B. 107.68 amps C. 10.32 amps D. 11.02 amps

Description : When a voltage of 95 VDC is applied to the illustrated circuit with a resistance of 10.23 kohms the current will be _______ . EL-0018 A. 9.29 milliamps B. 107.68 amps C. 10.32 amps D. 11.02 amps

Last Answer : Answer: A

Your Western Electric 3A test set meter reading is -23 dBm at at test point level of -8 dB. This is ______ dBrnc0. A. 75 B. 29 C. 30 D. 31

Description : Your Western Electric 3A test set meter reading is -23 dBm at at test point level of -8 dB. This is ______ dBrnc0. A. 75 B. 29 C. 30 D. 31

Last Answer : A. 75

If Ns=250, determine the earth radius k-factor. A. 1.98 B. 1.23 C. 1.33 D. 1.29

Description : If Ns=250, determine the earth radius k-factor. A. 1.98 B. 1.23 C. 1.33 D. 1.29

Last Answer : B. 1.23

Bhuj earthquake occurred in (a) 23 January, 2001 (b) 26 January, 2001 (c) 31 January, 2001 (d) 29 January, 2001

Description : Bhuj earthquake occurred in (a) 23 January, 2001 (b) 26 January, 2001 (c) 31 January, 2001 (d) 29 January, 2001

Last Answer : (b) 26 January, 2001

23.98 × 62.49 × 12.03 = ? × 29.97 a) 500 b) 600 c) 900 d) 450 e) 750

Description : 23.98 × 62.49 × 12.03 = ? × 29.97 a) 500 b) 600 c) 900 d) 450 e) 750

Last Answer : 24× 62.5× 12 = ? × 30 24× 750 = ? × 30 ? = (24× 750) / 30 = 600 Answer: b)

What is the respective ratio of the number of people preferring to travel bus to the number of people preferring to travel by rail in the year 2005? a) 29 : 27 b) 9 : 10 c) 27 : 29 d) 23 : 27

Description : What is the respective ratio of the number of people preferring to travel bus to the number of people preferring to travel by rail in the year 2005? a) 29 : 27 b) 9 : 10 c) 27 : 29 d) 23 : 27

Last Answer : c) 27 : 29

On what dates of April 1994 did SUNDAYfall? (A) 2,9,16,23,30 (B) 3,10,17,24 (C) 4,11,18,25 (D) 1,8,15,22,29

Description : On what dates of April 1994 did SUNDAYfall? (A) 2,9,16,23,30 (B) 3,10,17,24 (C) 4,11,18,25 (D) 1,8,15,22,29

Last Answer : Answer: B Solution:. Let us find the day on 1st April, 1994. 2000 years have 0 odd day. We have to calculate day on 1st April, 1994. 2000-1994 = 6 Years. 1996 is leap year and have 4 odd days Ordinary years ... was Friday Thus, on 3 rd , 10 th , 17 th , 24 th will be Sunday fall on April 1994.

The ratio of the ages of Bala and Babu is 13: 11. The total of their ages is 3.6decades. The proportion of their ages after 0.95decades will be [1 Decade = 10 years] a) 24:23 b) 12:11 c) 27:24 d) 29:26

Description : The ratio of the ages of Bala and Babu is 13: 11. The total of their ages is 3.6decades. The proportion of their ages after 0.95decades will be [1 Decade = 10 years] a) 24:23 b) 12:11 c) 27:24 d) 29:26

Last Answer : D Let, Bala’s age = 13A and babu’s age = 11A Then 13A + 11A = 36 A = 1.5 Bala’s age = 19.5years and Babu’s age = 16.5 years Proportion of their ages after 9.5 is = (19.5+9.5) : (16.5 + 9.5) = 29 : 26

Two faucet can separately fill a cistern 30minutes and 45 minutes respectively and when the waste faucet is open, they can together fill it in 54 minutes. The waste faucet can empty the full cistern in? A) 27 min B) 23 min C) 23 min D) 29 min

Description : Two faucet can separately fill a cistern 30minutes and 45 minutes respectively and when the waste faucet is open, they can together fill it in 54 minutes. The waste faucet can empty the full cistern in? A) 27 min B) 23 min C) 23 min D) 29 min 

Last Answer : A 1/30 + 1/45 - 1/x = 1/54 1/x=1/30+1/45-1/54 1/x=9+6-5/270 1/x=10/270 1/x=1/27 x = 27

Two students appeared at an examination. One of them secured 18marks more than the other and his marks was 72% of the sum of their marks. What are the marks obtained by them? a) 12.5,23.3 b) 26.7,16.0 c) 13.3,14.2 d) 11.45, 29.45 e) 29.8,15.4

Description : Two students appeared at an examination. One of them secured 18marks more than the other and his marks was 72% of the sum of their marks. What are the marks obtained by them? a) 12.5,23.3 b) 26.7,16.0 c) 13.3,14.2 d) 11.45, 29.45 e) 29.8,15.4 

Last Answer : Answer: D  Let the marks secured by them be x and (x + 18)  Then sum of their marks = x + (x + 18) = 2x + 18  Given that (x + 18) was 72% of the sum of their marks  =>(x+18) = 72/100(2x+18)  => ... 11x = 126 x = 11.45  Then (x + 18) = 11.45 + 18 = 29.45  Hence their marks are 11.45 and 29.45

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of (A) 23 (B) 23/2 (C) 25/2 (D) 21/3

Description : If the head is doubled in & centrifugal pump, the power required will increase in the ratio of (A) 23 (B) 23/2 (C) 25/2 (D) 21/3

Last Answer : B) 23/2

In a survery, it was found that `21` persons liked product `A`, `26` liked product `B` and `29` liked product `C`. If `14` persons liked products `A`

Description : In a survery, it was found that `21` persons liked product `A`, `26` liked product `B` and `29` liked product `C`. If `14` persons liked products `A`

Last Answer : In a survery, it was found that `21` persons liked product `A`, `26` liked product `B` and `29` liked ... like the products `A` and `B` but not `C`

One moles of anhydrous `AB` dissolves in water and liberates `21.0 J mol^(-1)` of heat. The valueof `DeltaH^(Theta)` (hydration) of `AB` is `-29.4 J m

Description : One moles of anhydrous `AB` dissolves in water and liberates `21.0 J mol^(-1)` of heat. The valueof `DeltaH^(Theta)` (hydration) of `AB` is `-29.4 J m

Last Answer : One moles of anhydrous `AB` dissolves in water and liberates `21.0 J mol^(-1)` of heat. The valueof `DeltaH^(Theta) ... mol^(-1)` D. `-8.4 J mol^(-1)`

If I divided me by 4 and add 21 you get 29. What number I am?

Description : If I divided me by 4 and add 21 you get 29. What number I am?

Last Answer : You are 32 because 32/4 plus 21 = 29

The mean monthly temperature and rainfall of a station are given below: Month Temperature ºC Rainfall mm January 24 2 February 25 1 March 27 0 April 29 3 May 30 16 June 29 520 July 28 709 August 27 419 September 27 297 October 28 88 November 28 21 December 26 2 Yearly 27 2078 The above said data relate to which of following cities? [CDS 2004] (a) Ahmedabad (b) Bangalore (c) Mumbai (d) Vadodara

Description : The mean monthly temperature and rainfall of a station are given below: Month Temperature ºC Rainfall mm January 24 2 February 25 1 March 27 0 April 29 3 May 30 16 June 29 520 July 28 709 August 27 419 ... to which of following cities? [CDS 2004] (a) Ahmedabad (b) Bangalore (c) Mumbai (d) Vadodara

Last Answer : Ans: (c)

The number of amino acids in single chain polypeptide glucagons is (A) 21 (B) 29 (C) 31 (D) 39

Description : The number of amino acids in single chain polypeptide glucagons is (A) 21 (B) 29 (C) 31 (D) 39

Last Answer : Answer : B

Sufficient energy required to produce 3 ATP from 3 ADP and 3 pi is (A) –21,900 cal (B) 29,900 cal (C) 31,900 cal (D) 39,900 cal

Description : Sufficient energy required to produce 3 ATP from 3 ADP and 3 pi is (A) –21,900 cal (B) 29,900 cal (C) 31,900 cal (D) 39,900 cal

Last Answer : A

In India, according to the 2001 Census, the female literacy rate is – (1) 39.29 (2) 54.16 (3) 21.97 (4) 29.76

Description : In India, according to the 2001 Census, the female literacy rate is – (1) 39.29 (2) 54.16 (3) 21.97 (4) 29.76

Last Answer : (2) 54.16 Explanation: From comparison to the 1991 census, the male literacy rate increased to 75.26%, which showed an increase of 11.13%.0n the other hand, the female literacy of 53.67% increased at a much faster rate of 14.38%. According to 2011 census, female literacy rate of India is 64.6%.

The ball bearing is subjected to a radial load of 4000 N. Expected life for 90% bearings is 9000 hr and the shaft is rot (a) 42.21 kN (b) 37.29 kN (c) 26.33 kN (d) 35.22 kN

Description : The ball bearing is subjected to a radial load of 4000 N. Expected life for 90% bearings is 9000 hr and the shaft is rot (a) 42.21 kN (b) 37.29 kN (c) 26.33 kN (d) 35.22 kN

Last Answer : (b) 37.29 kN

The optimum temperature for sugarcane is (a) 21-27 °C (b) 14-29 °C (c) 25-30 °C (d) 28-34 °C

Description : The optimum temperature for sugarcane is (a) 21-27 °C (b) 14-29 °C (c) 25-30 °C (d) 28-34 °C

Last Answer : (b) 14-29 °C

Protection of life and liberty of Indian Citizen is secured by: a) Article 17 b) Article 21 c) Article 25 d) Article 29

Description : Protection of life and liberty of Indian Citizen is secured by: a) Article 17 b) Article 21 c) Article 25 d) Article 29

Last Answer : b) Article 21

Calcium cynamide have equivalent basicity a. 21 b. 29 c. 63 d. 110

Description : Calcium cynamide have equivalent basicity a. 21 b. 29 c. 63 d. 110

Last Answer : c. 63

A and B working alone can finish a job in 5 days and 7 days respectively. They work at it alternately for a day. If A starts the work, find in how many days the job will be finished? a) 29/5 b) 11/5 c) 24/5 d) 21/5 e) None of these

Description : A and B working alone can finish a job in 5 days and 7 days respectively. They work at it alternately for a day. If A starts the work, find in how many days the job will be finished? a) 29/5 b) 11/5 c) 24/5 d) 21/5 e) None of these

Last Answer : Work done by A in one day = 1/5 and work done by B in one day = 1/7 They are working alternately. Therefore, Work done in first two day = (1/5 + 1/7) = 12/35 Work done in first four day = 24/35 Work done in ... = 4/35/1/7 = 4/5 of the day. Therefore Total days taken = 5 + 4/5 = 29/5 days Answer: b)

15 17 21 29 45 77 ? a) 109 b) 125 c) 141 d) 173 e) None of these

Description : 15 17 21 29 45 77 ? a) 109 b) 125 c) 141 d) 173 e) None of these

Last Answer : 15 + 2 = 17 17 + 4 = 21 21 + 8 = 29 29 + 16 = 45 45 + 32 = 77 77 + 64 = 141 Answer: c)