Set - 6 Flashcards
Which are the largest of the white blood cells?
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A. lymphocytes
B. eosinophils
C. basophils
D. monocytes
D. monocytes
Monocytes are the largest cells of the blood (averaging 15–18 μm in diameter), and they make up about 7 percent of the leukocytes.
The instrument that measures temperature, pressure, and humidity at various altitudes in the atmosphere ___________?
A. Barograph
B. Radiosonde
C. Aneroid barometer
D. Altimeter
B. Radiosonde
The species that flower are called ______________?
A. Gymnosperms
B. Bryophytes
C. Angiosperms
D. Algae
C. Angiosperms
Angiosperms are a group of plants that produce flowers as their reproductive structures. They are the most diverse and dominant group of plants on Earth, comprising a wide range of species from small herbs to large trees. The flowers of angiosperms contain male and female reproductive organs, and after pollination, they develop into fruits containing seeds. Angiosperms include familiar plant groups such as flowering trees, grasses, and garden flowers. Gymnosperms, on the other hand, are another group of plants that do not produce flowers but have naked seeds, such as conifers. Bryophytes refer to non-vascular plants like mosses and liverworts. Algae are simple, aquatic organisms that do not have true roots, stems, leaves, or flowers.
Basidiospores are considered to be a major source of ___________?
A. airborne allergens
B. water borne allergens
C. animal faeces
D. bio-weapon
A. airborne allergens
A basidiospore is a reproductive spore produced by Basidiomycete fungi, a grouping that includes mushrooms, shelf fungi, rusts, and smuts. Basidiospores typically each contain one haploid nucleus that is the product of meiosis, and they are produced by specialized fungal cells called basidia.
Pollutants that are introduced into the environment by human activity are called as ___________?
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A. Qualitative pollutants
B. Quantitative pollutants
C. Anthropogenic pollutant
D. All of Above
C. Anthropogenic pollutant
An example of an abiotic component __________?
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A. Plants
B. Soil
C. Animals
D. Bacteria
B. Soil
Abiotic components refer to non-living factors in an ecosystem or environment. They include physical and chemical factors such as soil, water, air, temperature, sunlight, rocks, and minerals. Soil, in particular, is a key abiotic component that provides a medium for plant growth, contains nutrients, and affects various ecological processes.
What is the mass of the Sun?
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A. 1.5×10 Power 30 Kg
B. 1.98×10 Power 30 Kg
C. 4.5×10 Power 30 Kg
D. 8×10 Power 30 Kg
B. 1.98×10 Power 30 Kg
What is the temperature at the center of the Sun?
3
A. 6 million °C
B. 10 million °C
C. 15 million °C
D. 20 million °C
C. 15 million °C
The top atmosphere of the Earth directly reflects back into space nearly what part of the total amount of sun’s energy coming to it?
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A. 10%
B. 20%
C. 30%
D. 50%
C. 30%
The phases of the moon are partially the result of the____________?
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A. Changes in the shape of the moon
B. Revolution of the moon around the earth
C. Variations in the moon’s gravitation
D. Variations in the speed of rotation of the moon
B. Revolution of the moon around the earth
‘Black holes’ refers to_______________?
1
A. Holes occurring in heavenly bodies
B. Bright spots on the sun
C. Collapsing object of high density
D. Collapsing object of low density
C. Collapsing object of high density
A black hole is a region in space where gravity is so strong that nothing, not even light, can escape its gravitational pull. It is formed by the gravitational collapse of a massive object, typically a star, under extreme conditions. As the object collapses, it forms a region with infinite density called a singularity, surrounded by an event horizon beyond which nothing can escape. Black holes have a powerful gravitational force and distort space-time around them. They are characterized by their immense gravitational pull and the absence of any observable light or electromagnetic radiation, hence the term “black hole.”
Constellations referred to as zodiac, are__________?
1
A. Imaginary regions that encompass the path of the planets
B. Signs of Roman gods
C. A group of stars
D. None of these
A. Imaginary regions that encompass the path of the planets
Which one of the following is not a unit of distance?
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A. Parsec
B. Astronomical Unit
C. Light Year
D. Foot Candle
D. Foot Candle
Foot Candle is commonly used in lighting design and is defined as the illuminance produced by one lumen of light evenly distributed over an area of one square foot. Parsec, Astronomical Unit, and Light Year are all units of distance used in astronomy to measure vast distances between celestial objects.
Which on of the following planets orbits around the sun in a clockwise direction?
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A. Earth
B. Mercury
C. Jupiter
D. Venus
D. Venus
the rotation of a planet is determined by the direction of its axial spin. Most planets in our solar system, including Earth, rotate counterclockwise when viewed from above the North Pole. However, Venus is an exception as it rotates in the opposite direction, making it the only planet in our solar system to have a clockwise rotation. This means that on Venus, the Sun would rise in the west and set in the east.
Isobars are the lines connecting the places having same:___________?
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A. Pressure
B. Rainfall
C. Height
D. Temperature
A. Pressure
Spring tides occur on new moon and full moon days because on these days_____________?
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A. Sun, moon and earth are in a straight line
B. Sun and earth are at right angles
C. Sun and moon are at right angles
D. Earth and moon are at right angles
A. Sun, moon and earth are in a straight line
Which of the following planets is fastest rotating planet?
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A. Mercury
B. Marx
C. Jupiter
D. Venus
C. Jupiter
Jupiter is the fastest spinning planet in our Solar System rotating on average once in just under 10 hours. That is very fast especially considering how large Jupiter is.
Which of the following planets has the smallest diameters_____?
1
A. Mercury
B. Marx
C. Pluto
D. Venus
A. Mercury
Which of the following is the largest planet?
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A. Neptune
B. Jupiter
C. Saturn
D. Mars
B. Jupiter
Who was the first to measure the earth’s radius
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A. Galileo
B. Copernicus
C. Ptolemy
D. Eratosthenes
D. Eratosthenes
The first person to determine the size of Earth was Eratosthenes of Cyrene, who produced a surprisingly good measurement using a simple scheme that combined geometrical calculations with physical observations. Eratosthenes was born around 276 B.C., which is now Shahhat, Libya. He studied in Athens at the Lyceum.
Which is the nearest star to our sun?
2
A. Proxima Centurai
B. Alpha Scorpii
C. Beta Orionis
D. Vega
A. Proxima Centurai
The Lunar eclipse occurs when:
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A. Moon is b/w the earth and the sun
B. Earth is b/w the sun and the moon
C. Sun is b/w the earth and the moon
D. Earth is at right angles to the direction of the sun and the moon
B. Earth is b/w the sun and the moon
Most important effect of the moon on earth is that it___________?
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A. Causes weather change
B. Causes earthquakes
C. Causes solar and lunar eclipse
D. Effects tides of the ocean
D. Effects tides of the ocean
Among the planets of the Solar system the position of the Earth from the Sun is:_________?
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A. Second
B. Third
C. Fourth
D. Sixth
B. Third
Which of the followong spacecrsft enabled man to step on the moon first?
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A. Spuntnik I
B. Luna II
C. Vostok I
D. Apollo XI
D. Apollo XI
The Apollo XI mission, launched by NASA, successfully landed the first humans on the moon on July 20, 1969. The crew of Apollo XI consisted of Neil Armstrong, Buzz Aldrin, and Michael Collins
Hailey’s comet is visible after every_________?
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A. 84 years
B. 76 years
C. 1000 years
D. 365 years
B. 76 years
Halley’s Comet is arguably the most famous comet in history. As a “periodic” comet, it returns to Earth’s vicinity about every 75 years, making it possible for a person to see it twice in their lifetime. It was last here in 1986, and it is projected to return in 2061.13-Jan-2022
The setting sun often looks oval in the shape because of__________?
A. The fact that sun really becomes oval in the evening
B. Refraction of rays of sun passing through the atmosphere
C. Optical Illusion
D. Dispersion
B. Refraction of rays of sun passing through the atmosphere
Which one of the following is applicable to the planet ‘Venus’?
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A.Smallest
B.Brightest
C.Most dense
D.Largest
B. Brightest
Study of current and past landscapes formation is known as____________?
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A. Morphology
B. Aero logy
C. Geo-morphology
D. Biology
C. Geo-morphology
Central Color of Rainbow is__________?
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A. Blue
B. Green
C. Red
D. Indigo
B. Green
who invented bulb?
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A. Philips
B. Robert
C. Edison
D. Willium
C. Edison
Glucose syrup is made from__________?
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A. oat
B. wheat
C. maize
D. rice
C. maize
Bamboo is a__________?
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A. Herb
B. Grass
C. Shurb
D. Tree
B. Grass
Although bamboo is a grass, many of the larger woody bamboo species are very tree-like in appearance and are often called “bamboo trees”. However, there are a few essential differences between grasses and trees: Like all grasses, bamboo stems (culms) are essentially hollow.
It belongs to the family Poaceae (the grass family) and is known for its fast growth and woody, hollow stems. Despite its tall and tree-like appearance, bamboo is not considered a tree but a giant perennial grass
Lactometer is used for__________?
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A. Ship
B. Milk
C. Honey
D. None
B. Milk
X-rays were discovered by __________?
4
A. Wilhelm Conrad Roentgen
B. Thomson
C. Ernest Rutherford
D. Bacquerel
A. Wilhelm Conrad Roentgen
W.C. Röntgen reported the discovery of X-rays in December 1895 after seven weeks of assiduous work during which he had studied the properties of this new type of radiation able to go through screens of notable thickness. He named them X-rays to underline the fact that their nature was unknown.
The gravitational pull at the lunar surface is ________ of Earth?
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A. 1/3
B. 1/4
C. 1/5
D. 1/6
D. 1/6
Year is longest on:___________?
A. Jupiter
B. Earth
C. Mercury
D. Mars
A. Jupiter
Why is a year longer on Jupiter?
Jupiter has such a long year because it is quite far from the Sun. Not only does this mean it has a longer path to travel on its orbit, but the Sun’s gravity is much weaker at that distance, requiring it to move more slowly to stay in its orbit
Segmented Worms take breath through:_________?
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A. Mouth
B. Nose
C. Moist Skin
D. Head
C. Moist Skin
The most brightest planet amongst the eight planets?
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A. Mercury
B. Jupiter
C. Venus
D. Neptune
C. Venus
Who discovered the Gamma Rays?
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A. Alfred Marshall
B. Paul Villard
C. Bohar
D. Jabar bin Hayan
B. Paul Villard
Paul Villard, a French physicist, made the discovery of gamma rays in 1900 while studying the radiation emitted by radium. He observed a new and highly penetrating form of radiation that could pass through thick layers of materials. Villard named this radiation “gamma rays” after the third letter of the Greek alphabet. Gamma rays are a type of electromagnetic radiation with the highest energy and shortest wavelength in the electromagnetic spectrum. They are produced by various nuclear and radioactive processes and have numerous applications in fields such as medicine, industry, and research.
