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Some small cubes of same height 7 cm but variable length and width are put inside a large cuboid of height 21 cm. Length and width of cuboid is 32 cm and 24 cm, respectively. Small cubes are put such that cubes at the bottom most layer is of similar base area; second layer contains all the cubes of similar base area and third layer have all the cubes of similar base area. Which of the following statement(s) given below is / are TRUE? A: If side of each small cubes at bottom most layer is 8 cm, then maximum number of small cubes that can be put at bottom most layer is 12. B: If maximum of 48 cubes can be put at second layer, then side of each cube at second layer is 6 cm. C: If side of each small cubes at third layer is 1.6 cm, then maximum number of small cubes that can be put at third layer is 300.
Which of the following represent represents correct matching of the layers of atmosphere. A. Exosphere (i) Layer help in radio transmission. B. Troposphere (ii) Upper most layer of atmosphere. C. Stratosphere (iii) Lower most layer of atmosphere D. Thermosphere (iv) Layer contains ozone gas.
Which of the following statement is/are correct? Kara Sea is one of the hottest Seas in the world and is a part of the Arctic Ocean. Chukchi Sea is bounded on the west by the Long Strait, off Wrangel Island, and in the east by Point Barrow, Alaska, beyond which lies the Beaufort Sea. East Siberian Sea borders on the Laptev Sea to the west and the Chukchi Sea to the east.
Consider the following statements: 1. Black sea is an example of a marginal sea. 2. The Black Sea is connected to the Sea of Marmara by the Strait of Kerch. 3. The Bosphorus Strait connects the Black Sea to the Sea of Azov. Which of the above-given statement is/are NOT correct?
Select the correct answer from the following:
1. Melting of polar ice caps and subsequently rise in the sea level is the most important effect of global warming.
2. The sea level is likely to rise by one meter by 2070 AD if the present level of global warming is not controlled.
3. All the coral islands in the world will be submerged.
4. By 2044 AD, Fiji is likely to be submerged and rise in the sea level by the same year will pose a grave danger to the Netherlands.
Which of these statements are correct regarding the atmosphere of the earth:
1. It is enveloping the earth because of gravity.
2. Its density decreases with increasing height from the surface of the earth.
3. Its characteristic composition is same throughout its height.
4. Amount of pressure it exerts on earth's surface at sea level is called one atm sphere.
A company paid Rs. 6,00,000 as bonus to its employees at different levels A, B and C. Each employee at level A receives one and half times of the amount that was paid to each employee at level B and each employee at level B was paid twice the amount paid to the employee at level C. If 50 employees were on level A, 75 on level B and 100 on level C, how much amount was paid to each employee of level A ?
The moon looks blood red during a total lunar eclipse because some of the sunlight passes through Earth’s atmosphere to reach the moon. As the white light breaks up while passing through the atmosphere, most of its blue-colored wavelengths are absorbed and scattered. The remaining red wavelengths light up the moon in blood-red color. Which of the following statements do not support the assertion of the above-given statement? I: The moon looks blood red during a total lunar eclipse as the white light breaks up due to the Earth's atmosphere where most of its red-colored wavelengths are absorbed. II: The moon looks blood red during a total lunar eclipse as the earth blocks the white light to travel to the moon.
The phases of the moon as we see from the Earth are due to changing relative positions of the sun, the earth and the moon. Which of the following statements is true. A. on a full moon day, the earth comes between the sun and the moon B. on a new moon day, the moon is in between the earth and the sun C. on a full moon day, the moon is in between the earth and the sun D. on a new moon day, the earth is between the sun and the moon? E. on a new moon day, the sun is between the moon and the earth
S1: The real cause for the rise and fall of the sea level was not known to men for a long time.
P: They found out that the Moon is a satellite and it travels a regular path around the Earth.
Q: As time passed and knowledge increased, men began to learn more about the heaven and the stars and the planets.
R: They noticed that the Moon rose each day about an hour later than it rose the day before and the peak of the high tide also comes about an hour later each day.
S: Some imagined that the Earth itself was alive and the rising and falling of the tide was caused by the breathing of the Earth's big body.
S6: So they concluded that the Moon and the tide are connected in some way.

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