A merchant buys goods at 25% off the list price. He desires to mark the goods so that he can give a discount of 20% on the marked price and still clear a profit of 25% on the selling price. What percent of the list price must the mark the goods?
125%
100%
120%
80%
The bottom, side and front areas of a rectangular box are known. The product of these areas is equal to
The volume of the box
The square root of the volume
Twice the volume
The square of the volume
A body moves with uniform velocity. Which of the graphs shown here is a graph of distance against time for this motion?
none of these
Which of the following is a non-metal?
Mercury
Magnesium
Manganese
none of these
2, 3, and 4
1, 2 and 4
1, 3 and 4
1, 2, and 3
1 and 2
2 and 3
1, 2, and 3
1 and 3
The increase in area of the solid on heating is called
Superficial expansion
Linear expansion
Cubical expansion
Quadra expansion
The temperature at which no more energy can be removed from matter is called_________
Absolute zero
Boiling point
32ºF
32ºC
The movement of oxygenated blood from the left auricle to the ventricle and then to aorta to all parts of the body is called_______
Extra-cellular circulation
Pulmonary circulation
Systemic circulation
Intracellular circulation
A contest began at noon one day and ended 1000 minutes later. At what time did the contest end?
10:00 p.m.
Midnight
2:30 a.m.
4:40 a.m.
Beena used a calculator to find the product 0.075 ( 2.56. She forgot to enter the decimal points. The calculator showed 19200. If Beena had entered the decimal points correctly, the answer would have been
0.0192
0.192
1.92
19.2
Two cyclists, k km apart, and starting at the same time, would be together in r hours if they travelled in the same direction, but would pass each other in t hours if they travelled in opposite directions. The ratio of the speed of the faster cyclist to that of the slower is
A Brief History of Time is the title of a book written by:
Albert Einstein
Stephen Hawking
Hendrick Lorentz
Isaac Newton
none of these
Which of the following can produce a virtual image?
Plane mirror
concave lens
Convex lens
all of these
A bar magnet with poles N and S marked is freely suspended. Then the end marked N would point towards________
The south magnetic pole of the earth
The south geographic pole of the earth
The north magnetic pole of the earth
The north geographic pole of the earth
Aluminium is obtained by______
Heating Al2O with iron
Heating Al2O3 with coke
Electrolysing a solution of Al2O3 in molten cryolite
Electrolysing fused AlCl3
Under Indian space programme, the abbreviation GSLV stands for_______
Geosynchronous Satellite Launch Vehicle
Global Satellite Link Vehicle
Geostationary Solar Light Vehicle
Geostationary satellite link vehicle
If there were no organic life on the Earth, the amount of oxygen in the atmosphere will______
Remain unchanged
Be approximately hundred percent
Be almost nil
Be approximately fifty percent
Mark the odd one out.
Colour blindness
Hexadactyly
Haemophilia
Night blindness
1, 5, 4, 7, 6, 3, 2
1, 3, 5, 6, 4, 2, 7
1, 3, 5, 2, 4, 6, 7
1, 5, 6, 2, 4, 7, 3
In a triangle ABC, (A = 90º and D is the mid-point of AC. The value of BC2 – BD2 is equal to_______
AD2
2AD2
3AD2
4AD2
The factorization of 25 – p2 – q2 – 2pq is
(5 + p + q) (5 – p + q)
(5 + p + q) (5 – p – q)
(5 + p + q) (5 + p – q)
(5 + p – q) (5 – p + q)
9
4.96
3.72
6.76
The value of 9x2 + 49y2 – 42xy when x = 15 and y = 3 is______
636
576
386
456
1D, 2B, 3C, 4A
1A, 2C, 3D, 4B
1B, 2D, 3A, 4C
1C, 2A,3B, 4D
Acute angles
Obtuse angles
Parallel lines
Perpendicular lines
30º
45º
55º
60º
What is the prime factorization of 45?
23 ( 5
32 ( 5
52 ( 3
52 ( 9
A duck flew at 18 km per hour for 3 hours, then at 15 km per hour for 2 hours. How far did the duck flu in all?
69 km
75 km
81 km
84 km
The age of a man is same as his wife’s age with the digits reversed. Then sum of their ages is 99 and the man is 9 years older than his wife. How old is the man?
50
49
54
44
12
10
18
8
How many small cubes with edges of 10 cm can be just accommodated in a cubical box of 1 m edge?
10
100
1000
10000
Which of the following is not true?
Burning of coal releases SO2
Acid rain is harmful to crops
CNG is a clean fuel
Incomplete combustion of coal releases O2.
Dennis the Menace is thinking of two numbers. Their greatest common factor is 6. Their least common multiple is 36. One of the numbers is 12. What is the other number?
18
16
6
24
Anita passed around a basket of strawberries to the girls at her party. Before the party she ate 5 strawberries and gave a friend 3. Eight girls arrived at the party. The first girl took a strawberry, the second girl took 3 strawberries, the third girl took 5 strawberries and so on. After the last girl took her strawberries, the basket was empty. How many strawberries were there in the basket at the beginning?
72
60
65
45
The Earth is surrounded by an insulating blanket which protects us from the UV rays.
Hydrosphere
Ozonosphere
Atmosphere
Biosphere
Which of the following has an organic origin?
Sand
Bakelite
Nylon
Coal
If you dissolved a lot of salt in some water in a large flat dish and put the dish in bright sunlight on a hot day, what would be left in the dish after a long time?
Dry salt
Water with no salt
The same salty water as before
Nothing
Which of the following statements is wrong?
An atom and its ion have unequal number of protons
The size of an anion is bigger than that of the corresponding atom
An atom is electrically neutral
The size of a cation is smaller than that of the corresponding atom