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A chemical solution appears green when the salt concentration is 8 grams per litre (gpl) and red when it is 10 gpl. Pure water was added to the solution of 1 litre of 15 gpl solution till it turned green. Then 125 ml of the green solution is taken out and x grams of salt is added to the green solution to make it red. Another 500 ml of the final solution was taken out and y litres of green solution is added to get a resultant solution of concentration 9.6 gpl.  Assume adding salt doesn’t change its volume and find the ratio of x and y. 
A 60% spirit solution is mixed with r% spirit solution in the ratio 1 : 3 such that a s% spirit solution is obtained. When a (s/3)% spirit solution is mixed with 55% spirit solution in equal ratio, an (r/2)% spirit solution is obtained. Which of the following can be determined? (A) Value of ‘r’ (B) Value of ‘s’ (C) Volume of the 60% spirit solution mixed initially (D) If 9 liters of r% spirit solution was mixed initially, what was the volume of the s% spirit solution thus obtained?
Metal 'A' displaces metal 'B' from its salt solution, but not able to displace metal 'C' from its salt solution. Metal 'B' displaces metal 'D' from its salt solution. Which of the following depicts correct order of reactivity of metals. 
Consider the following statements regarding solid solution of metals: 1. The solubility of metallic solids is primarily limited by size factor. 2. A metal with high valence can dissolve large amount of metal of lower valence. 3. A metal with same lattice crystal structure can form a series of solid solutions 4. The limit of solid solubility is indicated by a phase boundary called liquidus Which of the above statements are correct? 
“What is the different between height and radius of solid cylinder?” Which of the following option is sufficient alone to find the answer? A) A solid cylinder is made by melting a solid sphere. The radius of cylinder is 3 times the radius of a circle whose area is 154 sq.m. Height of cylinder is equal to the height of cone whose volume is 2772 cubic meters. B) Area of a rectangle whose longer side is ¾ times the radius of a solid cylinder, is 168 sq.m and, Volume of solid cylinder is 2772 cubic meters and its height is 18 m. C) A metallic cone of radius 15m and height 35m is melted into the solid cylinder of radius equal to the radius of a circle whose area is equal to the area of rectangle whose sides are in the ratio 4 : 3 respectively. D) The curved surface area of the solid cylinder is 3 time the surface area of a sphere of radius 7m and height of cylinder is equal to the height of a metallic cone whose curved surface area is 308 sq.m. 
The question given below consists of a statement, followed by two arguments numbered I and II. You have to decide which of the arguments is a 'strong' argument and which is a 'weak' argument. Statement: Should women serve in combat units? Arguments: I. Yes, allowing women to serve in combat units is a positive step towards gender equality. II. No, women are the most emotional gender in India Give answer: (A) If only argument I is strong (B) If only argument II is strong (C) If either I or II is strong (D) If neither I nor II is strong and
Consider a given volume of liquid at a temperature T below Tm with a free energy G’. If some of the atoms of the liquid cluster together to form a small sphere of solid, the free energy of the system will change to G, given by________ (Assume V1 volume of the solid sphere, V2 volume of liquid, A is the solid/liquid interfacial area, γ solid/liquid interface free energy, G1 and G2 are the free energies per unit volume of solid and liquid respectively).
When a metal X is placed in blue vitriol solution it change blue color solution into green and a red-brown coating of metal Y is formed on metal X. Metal X and Y are:
The question below consists of a set of labelled sentences in which first and the last sentence is given. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph. S1- In such a competitive world, it is must for all to have a good education. P- The importance of higher education has become increasingly in getting good job and position. Q- It makes us strong mentally, socially and intellectually by increasing our knowledge level, technical skills and a good position in the job. R- Each and every kid has their own dream of doing something different in life. S- Proper education creates lots of ways to go ahead in the future. S6- There is only one way to all dreams which is a good education.
There are four friends Sharayn, Pinky, Tanisha and Mamta. Two study in J college. one each in X college and A college. Each one is definitely good at one subject and one is good at all the subjects. The subjects are English, Science, Maths and Computers. Of those studying in J college, one is good at Maths and the other in all subjects. Tanisha is studying in Acollege. Pinky is good at Maths. Sharayn is not good at Science. Find who is good at all the subjects.