आनुवंशिकता एवं जैव विकास - L7 | Chapter 9 | कक्षा 10 NCERT विज्ञान | Pooja Mam

K walked at 3 kmph for a certain distance with L and thereafter at 6 kmph with M to cover a total distance of 27 km in 7 hours. Find the distance travelled with M. A. 15 km B. 12 km C. 10 km D. 9 km

Consider the marks, out of 100, obtained by 51 students of a class in a test, given in Table 14.9. M a r k s"N u m b e r o f S t u d e n t s"0-10 5 10-20 10 20-30 4 30-40 6 40-50 7 50-60 3 60-70 2 70-80 2 80-90 3 90-100 9Tot a l 51 Draw a freque

4.9 g of K_(2)Cr_(2)O_(7) is taken to prepare 0.1 L of the solutio. 10 mL of this solution is further taken to oxidise Sn^(2+) ion into Sn^(4+) ion so produced is used in second reaction to prepare Fe^(3+) ion then the millimoles of Fe^(3+) ion formed will be (assume all other components are in sufficient amount)[Molar mass of K_(2)Cr_(2)O_(7)=294 g ].

A Salution is saturated with respect to strontium fluoride and strontium carbonate . The fluoride ion concentration in the solution is found to be 3.7 xx 10^(-2) mol L^(-1) . What is the value of [CO_(3)^(2-)] ? (K_(sp) SrF_(2) = 7.9 xx10^(-10) ), (K_(sp) SrCO_(3)) = 7 xx10^(-10) )

There are twelve friends A, B, C, D, E, F, G, H, I, J, K and L who invested money in some business in the ratio of 1 : 2 : 3 : 4: 5 : 6 : 7 : 8 : 9 : 10 : 11 : 12 and the duration for which they invested the money is in the ratio of 12 : 11 : 10 : 9 : 8 : 7 : 6 : 5 : 4 : 3 : 2 : 1 respectively. Who will get the maximum profit at the end of the year ?

The runs scored by two teams A and B on the first 60 balls in a cricket match are given below: "N u m b e r o f b a l l s""T e a m A""T e a m B"1-6 2 5 7-12 1 6 13-18 8 2 19-24 9 10 25-30 4 5 31-36 5 6 37-42 6 3 43-48 10 4 49-54 6 8 55-60 2 10

{:(A , B , C , D , E , F , G , H , I , J , K , L , M , N , O , P , Q , R ,S , T ,U , V , W ,X , Y , Z), (1 ,2 , 3 , 4 ,5, 6 , 7,8,9,10 , 11 , 12, 13, 14, 15 , 16 , 17 , 18 , 19, 20 , 21 ,22 , 23 , 24 , 25 , 26):} JLNP: OMKI :: SUWY:?

{:(A , B , C , D , E , F , G , H , I , J , K , L , M , N , O , P , Q , R ,S , T ,U , V , W ,X , Y , Z), (1 ,2 , 3 , 4 ,5, 6 , 7,8,9,10 , 11 , 12, 13, 14, 15 , 16 , 17 , 18 , 19, 20 , 21 ,22 , 23 , 24 , 25 , 26):} NOPQ : MLKJ :: HIJK : ?