0.194805194805...
Convert the decimal into a fraction.
15/77
16/77
17/77
18/77
19/77
I have one fair 6-sided die and one unfair 6-sided die. On the unfair die, the probabilities of rolling numbers \(2,…,6\) are equal and the probability of rolling a 1 has a different value. I roll each die once.
If the probability of rolling one 3 and one 4 is \( 1/24, \) what is the probability of rolling two 1’s?
\(1/64\)
\(1/36\)
\(1/16\)
\(1/8\)
\(9/64\)
8000 cuboids of dimensions 2x, x and x are melted and formed into a similar cuboid. Find the ratio of the total surface area of the individual cuboids to that of the new cuboid.
8000:1
20:1
9:20
200:9
46:2
The points O (0 , 0), P (3 , 4), Q (2√6 , 1) and R form a rhombus. What are two possible coordinate values of R?
\((-3 , -4) , (-2\sqrt6 , 1)\)
\((3 + 2\sqrt6 , 5) , (3 - 2\sqrt6 , 3) \)
\(( 3 - 2\sqrt6 , 5) , (3+2\sqrt6 , 3)\)
\((4 , 3) , (1 , 2\sqrt6)\)
\((-3 , -4), (3+2\sqrt6 , 3)\)
Below is an image of a human blood screen.
Which cell is marked by the blue arrow?
Erythrocyte
Neutrophil
Basophil
Plasma
Platelet
Which of the following is NOT a function of membranes in cells?
Barrier between areas
cell signalling
cell recognition
Support for the cell
site of chemical reactions
Which one of the following statements is not true about solubility of common salts?
All group one salts are soluble
All carbonates are soluble except lead, zinc and copper carbonates
All suphates are soluble except Lead and Barium sulphate. Calcium sulphate is sparingly soluble
All nitrates are soluble
All Chlorides are soluble except lead and silver chlorides. Lead chloride is soluble in hot water
This question is about fractional distillation and the apparatus relating to it.
Which of the following statements relating to fractional distilation is/are not correct?
1. Particles first transition to a state in which they are further apart and then transition to a state in which they are closer together
2. This process could be used to separate a mixture containing ethanol diluted in water
3. Covalent bonds between atoms are broken at position 1 and re-formed during the process
1 and 2 only
1 only
2 only
3 only
None of them
Two boxes labeled X and Y have masses 6.0 kg and 4.0 kg respectively. Box Y is stacked on top of box X as shown below. Assume that all the surfaces are frictionless.
What is the acceleration of Y when X is pulled to the left with a force of 15 N?
0
1.5 m/s2
2.0 m/s2
5.0 m/s2
15.0 m/s2
A mixture is made up of different liquids in a ratio of 1:2:2, of oil:golden syrup:water.
Density of golden syrup = 1400 kg/m3
Density of oil = 900 kg/m3
Density of water = 1000 kg/m3
Take g to be 10N/kg in this question
What hydrostatic pressure would 50 cm of this miture exert.
2850 Pa
5200 Pa
5700 Pa
6300 Pa
570,000 Pa
