Related Questions

After taking 30 socks out of the washing machine, Shamim noticed that the ratio of blue socks to brown socks to black socks was 2:3:5. How many black socks were in the washing machine?
A 21
B 15
C 9
D 6
During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration
A At time zero
B At the end of filtration
C When half the filtrate has been obtained
D At the end of filtration, but decreases with time subsequently
In washing type plate and frame filter press, the ratio of washing rate to the final filtrate rate is
A 4
B $$\frac{1}{4}$$
C 1
D $$\frac{1}{2}$$
The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is
A 0.25
B 0.50
C 0.75
D 1.25
Quick lime (or caustic lime)
A Is obtained by the calcination of pure lime stone
B Has great affinity to moisture
C Is amorphous
D All the above
একটি থলেতে 4 টি সাদা এবং 2 টি কালো বল আছে। অপর একটি থলেতে 3 টি সাদা ও 5 টি কালো বল আছে। যদি প্রত্যেক থলে হতে একটি করে বল উত্তোলন করা হয়, তবে বলদ্বয় সাদা হওয়ার সম্ভাবনা কত? (A bag contains 4 white and 2 black balls. Another bag contains 3 white and 5 black balls. If one ball is drawn from each bag, what is the probability that both balls are white?)
A 4/6
B 3/8
C 1/4
D 3/4
A red house is built from red bricks . A blue house is built from blue bricks. A white house is built from white bricks. Then what is a greenhouse made from ?
A green bricks
B wood
C glass
D steel
A jar contains white, red and green marbles in the ratios 2 : 3 : 5 six more green marbles are added to the jars and then the ratio becomes 2 : 3: 7 Hoe may white marbles are there in the jar?
A 5
B 6
C 9
D 10
A bag contains 6 black and 8 white . One ball is drawn at random. What is the probability that the ball drawn is white ?
A 3/4
B 4/7
C 1/8
D 3/7
There are 3 green , 4 orange and 5 white color bulbs in a bag. If a bulb is picked at random, what is probability of having either a green or a white bulb?
A 2/3
B 3/4
C 4/3
D 2/5

Next steps