Download JEXPO 2014 solved question physics_chemistry_2

JEXPO 2014 Question And Solution

51. Identify the substance which doesn’t continue to burn in an atmosphere of N2 – D) W
52. A student tests a sample of water an reports its pH as 6 at room temperature. Which one of the following might have been added to make it drinking water? –C) Baking Soda
53. Which among the following types of water is poor conductor of electricity?- D) Distilled Water
54. The water obtained in ion-exchange process is – A)  devoid of dissolved salts and minerals
55. --- is used in advertisement glow tubes.- A) Neon
56. A metal carbonate X when treated with dil. HCL gives Y. Y when used in mines area reduces suspended particulate matter in atmosphere. Identify Y- B) H2CO3
57. Metals present in permutit are – B) Na and Al
58. Which one of the following is the formula of salt?- B) KCl
59. Which element has twice as many electrons in its second shell as in the 1 st shell?- A) Be
60. Which gas is formed on heating sodium propanoate with lime?- B) Ethane
61. Identify the soft metal among the following – D) Potassium
62. Among the inert gases which gas does not have octet configuration ?- B) Helium
63. A solid non-metal X forms oxide of type X2O5, then the formula of its corresponding chloride is – B) XCl5
64. Which among the following acids is present in lemons?-  D) Ascorbic acid
65. Washing soda is – B) anhydrous sodium carbonate
66. A mixture of chalk powder and ammonium chloride can be separated by – D) sublimation
67. Which among the following is a pure substance? – B) Concentrated H2SO4
68. Which is a negative radical among the following?- A) Silicate 
69. If a  negative ion has 10 neutrons and 9 protons, then the electronic configuration of the atom of the element (from which the ion has been formed) is -  C) 2,8
70. Identify weak mineral acid among the following -  A) Palmitic Acid
71. Salt used in purification of water is – A) potas alum
72. The no. of lone pair of electrons on the N atom of ammonia molecule is – A) 1
73. Which one gives a red precipitate with ammoniacal solution of copper (I) chloride?-  C) ethyne
74. The name of the compound CH3-CH2COOH is – C) propanoic acid
75. In the fountain experiment with ammonia the color of the fountain is – C) pink
76. Which of the following is a saturated hydrocarbon?-  C) ethane
77. In the reaction C2H5OH->CH3COOH, KMnO4 acts as- C) oxidizing agent
78. Which one of Na, Mg, Fe and Cu has least tendency to form ions?- D) Cu
79. Which one of the following is least dense?- D) Aluminum
80. Which one is a convalent compound? – A) HCl
81. Which metal will react readily with cold water?-  D) Calcium 
82. Calcination is employed to concentrate which ore?- B) Oxide
83. The electrolyte which is partially ionized in its aqueous solution is – A) ethanoic acid
84. Which of the following is most reactive and stored in kerosene?- D) potassium 
85. Which one will not displace copper from copper sulphate?- D) Ag
86. Cinnabar is an ore of – A) Hg
87. An element combines with oxygen to give a compound with a high melting point. The compound is also soluble in water. The element is likely to be – A) Calcium
88. Sometimes chlorine gas is passed through water for its purification. What will be the pH of such a sample of water? – D) very near to 8
89. NaHCO3 represents the formula of which one of the following?- D) Baking Soda
90. Which one of the following has larger number of molecules? – C) 2 gm H2
91. The relative molecular mass of a gass is 44. Therefore its vapour density is – C) 22
92. A metal object is to be electroplated with silver. The electrolyte selected is – B) Sodium argentocyanide.
93. A deep blue color appears when excess of ammonium hydroxide is added to a solution containing the cation – D) Cu2+
94. The pair of irons which does not cause hardness of water is – D) nitrate, phosphate
95. In the reaction N2 + 3 H2 -> 2NH3, the volume ratio of the gases is 1:3:2, was stated by – B) Gay Lussac
96. Which one will migrate towards anode in an electrolytic cell?- B) Chloride ion
97. An aqueous solution contains H+, Ag+, Fe2+, Zn2+ ions. The ion that will be reduced first at cathods is- D) Zn2+
98. Which of the following pairs of elements are members of the same group of Periodic Table?- D) O and S
99. The salts of which among the pairs of metals cause greater water pollution?- B) Hg,Cd
100. In blue vitriol the no. of molecules of water of crystallization are – C) 5    

JEXPO Physics_Chemistry Solution (Q.1 to 50)
JEXPO 2014 Mathematics Solution

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JEXPO 2014 Mathematics solve question 51 to 100

JEXPO 2014 Question And Solution

51. The ratio between the exterior angle and the interior angle of a regular polygon is 1:3. Find the number of the sides of the polygon- C) 8
52. The difference between simple interest and compound interest on a sum of Rs. 20,000 for 2 years is Rs. 112.50. What is the annual rate of interest? – B) 7.5%
53. ABCD is a rhombus in which <B=120 and BD=5cm. Find the perimeter of the rhombus ABCD.- B) 20
54.  If p,q and r are the lengths of the sides of a right triangle PQR and the hypotenuse r=v2pq, then <QPR=?  - B) 45
55. If a and b are the roots of the equation 2x2-5x+2=0 then (a-1)b-1 = ? where a>b – D) 1
56. A sum of money doubles itself in 3 years. How many times itself will the sum become  in a period of 9 years at simple interest ? – A) 4
57. The mean proportional of a and b is 10 and the value of a is four times the value of b. Find the value of a+b (a>0 and b>0).-  D) 25
58. If A = sin a + cos a and B= sin a- cos a then which of the following is true ? – C) A2+B2=2
59. Two complementary angles are in the ratio 2:3. Find the larger angle among them – B) 54
60. sin4a-cos4a= ? – C) 2sin2a-1
61. The volume of a classroom are 15ft x 10 ft x 11ft. The area of four walls is – B) 550 ft2
62. If seven times a number is added to one-fifth of itself, then five-sixth of the sum is equal to 30. Find the number.- A) 5
63. In an office 60% of the employees are women. 30% of the women employees have children and the 20% of the men employees have children. What percentages of the employees have children? – B) 26%.
64. In a two digit number, the units digits is 3 more than the tens digit. The sum of the digits is less than the original number. Find the product of the digits.- C) 10
65. A boat can travel at a speed of 8 Kmph upstream and 10 Kmph downstream. If it travels a distance of 40 Km upstream and 50 Km downstream, then the average speed of the entire journey is  - Kmph.- D) 9
66. Gold and copper are heavier than water by 19 and 9 times respectively. In what proportion should gold and copper be mixed to form an alloy so that it will be heavier than water by 12 times?- D) 3:7
67. A number is increased by 8% and also decreased by 3%. If the difference of the two numbers thus obtained be 407, find the original number. -  No Solution.
68.  The angle subtended by a minor arc of a circle in its alternate segment is – B) obtuse
69. The number of edges in a pyramid whose base has 20 edges is – D) 40
70. A parallelogram has two of its adjacent sides measuring 13 cm each. Find the sum of the squares of its diagonals.-   C) 676
71. If v2^n=1024, then 3^2(n/4-4)= ? – B) 9
72.  P varies inversely with vy. If y=2 then p=40, if p=20, then find y= ? – A) v8
73. Which of the following is greatest? -  B) (49)^3/2
74.  If x is the measure of an angle which is equal to its complement and y is the measure of an angle which is equal to its supplement then x/y is .  – C) 0.5
75. In a 100 m. race, Aloke gives Bala a start of 10m and beats him by 10m or 2 seconds. find Aloke’s speed in m/sec. – A) 6 1/4
76. If a number X is increased by 20% and then reduced by 20, it results in 160. Instead, if number X is reduced by 20% and increased by 20, then what will be the result?- A) 140
77.  A sold an article to B at 10%  profit. B sold it to C at 20% profit. find the price at which A bought if B’s profit is Rs. 44 (in Rs)- B) 200
78.  If qr:pr:pq=1:4:7 then find p/qr:q/pr . – D) 16:1
79. A varies directly with B when C is constant and inversely with C when B is constant. A=6 when B=2 and C=3. What is the value of A when B=3 and C=18? – C) 3/2
80. The mean proportion of two numbers is 24 and their third proportion is 72. Find the sum of the two numbers.-   No Solution.
81.  Two boys sat for an examination. One of them got 9 marks more than the other and his marks were 56% of the sum of their marks. Find the marks scored by each. – C) 42,33
82.  A is obtuse angle. The measure of <A and twice it’s supplement differ by 30. Then <A can be- B) 110
83. The length and breath of a rectangular field are 4 m and 3 m respectively. The field is divided into two parts by fencing it diagonally. find the cost of fencing at Rs. 10 per meter. – A) Rs. 50
84. Two trains are travelling in the same direction at 70 Kmph  and 50 Kmph. The faster train passes a man sitting in the slower train in 36 seconds. What is the length of the faster train? – C) 200m
85.  If x,y and z are in continued proportion, then (x+y+z)(x-y+z)=? – C) x2+y2+z2
86. A boy is late to his school by 20 minutes, if he travels at a speed of 4 Kmph. If he increases his speed to 6 Kmph, he is still late to his school by 10 minutes. At what speed should he travel to reach the school on time?- C) 12 Kmph
87. Anand completed one-fifth of a piece of work in 4 days. He was then assisted by Bhargav and they completed their remaining work in 8 days. Bhargav can complete the work in – days.- C) 20
88. What must be added to each of the number 3,7,8 and 16 so that the resulting numbers are in proportion? – C) 2
89. The numerator of a fraction is 1 less than the denominator. If 2 be added to the denominator, the fraction be comes 2/3. Find the friction.- 6/7
90. A sum of money at simple interest amounts to Rs. 800 in 2 years and to Rs. 1200 in 6 years. The sum is -. – A) 600
91. The population of a city increases by 20% at the end of every year. During which of the following years will the population get doubled?- D) fifth
92.  If each of algebraic expressions lx2+mx+n, mx2+nx+l and nx2+lx+m are perfect squares, the (l+m)/n=?- I have no solution
93. The ratio of the present ages of Anand and Bala is 8:3. When Anand was 30 years old, Bala was 5 years old. Find the present age of Bala (in yars). – C) 15
94. A shopkeeper marks the price of an article 50% above the cost price and declares a discount of 20%. If profit obtained is Rs. 30, then find the marked price. – A) Rs. 150
95. P and Q are two cylinders having equal total surface areas. The radius of each cylinder is equal to the height of the other. The sum of the volumes of both the cylinders is 250 π cm3. find the sum of their curved surface areas. (In cm2).- B) 100 π
96. Find the sum 0.23+0.234+0.2345 corrected to three significant figures. – C) 0.699
97. The square root of x^(m^2-n^2). x^(n^2+2mn). x^(n^2) is – B) x^(m+n)^2
98. The age of a father is 25 years more than his son’s  age. The product of their ages is 84 in years. what will be son’s age in years, after 10 years?- C) 13
99. If 3x-1 is a factor of the polynomial 81x^3-45x^2+3a-6 then a is – A) 8/3
100.  The value of [(23+2^2)^2/3 + (140-29)^1/2]^2 is –  No Solution

Solution of Question No. 1 to 50 here

Physics_Chemistry First Part Solution(Q.1 to 50)
Physics_Chemistry 2nd Part Solution (Q.51 to 100) 

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