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As physics p1 MCQS YEARLY ONLY.
Thank you so much sir :D How about this? http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w13_qp_12.pdf no 30 , ans is A -
Physics: Post your doubts here!
A turbine at a hydroelectric power station is situated 30 m below the level of the surface of a large lake. The water passes through the turbine at a rate of 340 m3 per minute. The overall efficiency of the turbine and generator system is 90%. What is the output power of the power station... -
As physics p1 MCQS YEARLY ONLY.
A beam of α-particles collides with a lead sheet. Each α-particle in the beam has a mass of 6.6 × 10–27 kg and a speed of 1.5 × 107 m s–1. 5.0 × 104 α-particles per second collide with an area of 1.0 cm2 of lead. Almost all of the α-particles are absorbed by the lead so that they have... -
As physics p1 MCQS YEARLY ONLY.
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w12_qp_12.pdf Q15 (B) ? -
Chemistry: Post your doubts here!
Thank you so much suchal riaz! :D and sorry for bothering you. http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w11_qp_12.pdf Q26 (A), Q30 (A) THANK YOU SO SO MUCHHHHHH!! please help :D -
Chemistry: Post your doubts here!
GUYSSSS. Gotta help me with this, PLEASEEE. hahahaha Must be very easy for you guys! :cool: Anyways, okay. http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w13_qp_13.pdf Q27 (C) http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w13_qp_12.pdf Q8 (D) [ i... -
Chemistry: Post your doubts here!
GUYSSSS. Gotta help me with this, PLEASEEE. hahahaha Must be very easy for you guys! :cool: Anyways, okay. http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w13_qp_13.pdf Q27 (C) http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w13_qp_12.pdf Q3 (B) Q8... -
Chemistry: Post your doubts here!
Q21 The functional groups that react with Na are CO2H and OH, so three of any of these should be present in the compound. B and D are ruled out. NaOH will react with CO2H, so there should be 1 CO2H and 2 OH groups. -
Chemistry: Post your doubts here!
Q8 whats the definition of enthalpy change of formation? One mole of substance formed from its elements under standard conditions. So, its C! A and B definitely out since C in standard conditions should be in solid state. Q10 Just look at Ca, Al and Si. Do the empirical formula stuffs. So, Ca=... -
Chemistry: Post your doubts here!
GUYSSSS. Gotta help me with this, PLEASEEE. hahahaha Must be very easy for you guys! :cool: Anyways, okay. http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w13_qp_13.pdf Q27 (C)... -
Chemistry: Post your doubts here!
for Q2 15/100 x 14 =2.1g of N basically it is the mole : the 15/100 So, 0.15 mole And 0.15/5 = 0.03 dm3 -
Chemistry: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w08_qp_1.pdf Hello!! Q11 (A) , Q30 (C) [ why i keep getting A ] and Q39 (B) [ what is thissss!! ] -
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Chemistry: Post your doubts here!
mass of nitrogen in 14 g = 15/100 * 14 = 2.1 moles of nitrogen = 2.1/14 = 0.15 conc in 5 dm3 = 0.15/5 = 0.03 mol dm-3 -
Chemistry: Post your doubts here!
Propyl ethanoate Propanol and sodium ethanoate ch3ch2ch2oh and ch3coona Mr= 60, Mr= 82 Total product Mr = 142 So, % propanol = 60/142 x 100 = 42.3% %ch3coona = 82/142 x 100 = 57.7% Hence, C -
Chemistry: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_12.pdf Q40 (D) why? -
Chemistry: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w12_qp_12.pdf no11 (A) why? -
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Chemistry: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w06_qp_1.pdf Q3(C), 4(D), 21(C) and 25(B) Need help!