1 mol of NH3=17gNH3" role="presentation" style="position: relative;">NH3=17gNH3NH3=17gNH3NH_{3} =...

Hardness of water is estimated by simple titration with Na2EDTA

Associated colloids' molecules contain both lyophilic & lyophobic groups, whereas multimolecular...

Solution : ETDA (Ethylene diammine tetra acetate)

Let us first calculate the number of bags I must have purchased if I paid Rs. 6.50 for Blue and Gre...

Let us first calculate the cost of Blue and Green marbles present in a bag of marbles.One bag has 2 ...

Length of the hall = 26 mBreadth of the hall = 18 mArea of the hall = 26 x 18 = 468 sq m.Cost of til...

Length of first roll =11.8Length of second roll =19.5Total tape = 11.8+19.5 = 31.3m

I buy 10 boxes of 10 Kg mangoes = 10 x 10 = 100 Kgs.I buy 5 boxes of 10 Kg apples = 5 x 10 = 50 Kgs....

The amount I have to pay is Rs. 48 /litres x 2.2 litres = Rs. 105.6.

The total number of students playing chess is 25. The number of students playing Table tennis is 10 ...

Y T M E C H I S R is nothing but C H E M I S T R Y jumbled. Y T M E C H I S R 1 2 3 4 5 6 7 8 ...

$(a)\; 2\large\frac{1}{2}$$\; \times\; 8 \large\frac{3}{4} \;$$\;\times\; 9\large\frac{1}{2}\;$$\tim...

There are 3 cards, or 3 numbers, one of them is known to us as 55.The sum of the cards, two numbers ...

From the figure we get :$\bigstar = 24824 - 24545 = 289$$\blacksquare =24834-4354 = 20480$$\blacktri...

I paid Rs. 12.27 as total postage, and the first Kg was charged Rs. 9.27, therefore, the remaining w...

Let the three digits be X (hundreds), Y (tens) and Z (units).It's tens digit is an odd multiple of 3...

Let the three numbers be X, Y and Z.The ratio of the second number to the third number is 3:1 $\righ...

Let the three numbers be X, Y and Z.Z: Y : : 6: 1 $\rightarrow$ Z = 6Y.Difference between Z and Y is...

We can see that 939 is a multiple of 3Y3, so let us find the factors of 939:Factors = 1, 3, 313. Cle...

$\bigstar + \bigstar + \bigstar + \bigstar = 43.56 \rightarrow 4 \times \bigstar = 43.56$$\Rightarr...

We essentially have 3 rectangles, one 24 x 37 and two 12 x 26 as seen here:Therefore the area = 24 x...

One way to treat this is to collapse the walls of the outer rectangles, so we have one inner rectang...

One way to do it its to add the numbers from 101.5 to 94.5 and then subtract the numbers from 94 to ...

Money in his account at the beginning of May $=24,000$Money he withdrew in May (one-fifth) $= \large...

(1) In the product of 213 and 10 what digit is in the hundreds column213 x 10 = 2130. One is in the ...

(1) (25 x 10) + (6 x 8)(25 x 10) + (6 x 8) = 250+ 48 = 298. Since options (i), (ii) and (iii) don't ...

(1) The following digit in the units column makes 6380_ divisible by 5The last digit has to be a 0 o...

(1) The place value of 4 in 2,452,688 is 400,000.(2) Difference in place value of 5 and the place va...

(1) Half of a number is 2400. When the number is multiplies by 1/3 we get___Half of a number is 2400...

Here is the # number of apples sold and the # of apples above 500 on all days:Option-1: Profit of Rs...

The day I sell the most apples is Monday, 1200 apples.The day I sell the least apples is Wednesday, ...

The day I sell the most apples is Monday, 1200 apples.The day I sell the least apples is Wednesday, ...

The total number of students playing chess is 25. The number of students playing Table tennis is 5 x...

The amount of time spent traveling is 40 mins. 10 times that is 400 mins.The amount of time spent on...

The total weight of the fruits I have purchased is 3.75 + 2.18 + 0.89 = 6.82 KgsIf each Kg is Rs. 25...

The total weight of the fruits I have purchased is 3.75 + 2.18 + 0.89 = 6.82 Kgs

The amount I have to pay is Rs. 24 x 2.5 litres = Rs. 60.

The amount I have to pay is Rs. 48 /litres x 2.2 litres = Rs. 105.6.

The length of each piece $ = \large\frac{6}{8}$$ = \large\frac{3}{4}$$ = 0.75$

It took Gary 18 minutes to walk one way and 18 minutes on the way back. Time traveled per day = 36 m...

It took Viv 15 minutes to walk to college and 20 minutes on the way back. Time traveled per day = 35...

Mr Smith started at 11.07 AM and drove for 3 hours 18 minutes.Let us first add the 3 hours of his jo...

When he arrived at B after a 3 hour 18 min drive, the time was 11.07 AMLet us first subtract the 18...

When he arrived at Sydney after a 2 hour 20 min drive, the time was 1.05 PM.Let us first subtract th...

Rs.1 has 100 paise, therefore Rs. 500 has 500 x 100 = 50000 paise.The number of 50 paise coins in Rs...

There are two ways to approach this problem. One way is to try out the shipping cost for each of the...

Let us split 200 grams into two parts, 80 grams and the remaining, 200 - 80 = 120 grams.The first 80...

Cost of 12 boxes is Rs. 144 $\rightarrow$ the cost of 1 box $ = \large\frac{144}{12}$$ = 12$Therefor...

Cost of 10 cartons is Rs. 240 $\rightarrow$ the cost of 1 carton $ = \large\frac{240}{10}$$ = 24$The...