Which of the following air pollutants can act as a precursor to both acid rain and photochemical smog?
Anonymous Quiz
14%
Carbon monoxide
9%
Particulate matter
43%
Sulphur dioxide
34%
Nitrogen oxides (NOx)
Black carbon, a short-lived climate pollutant, primarily contributes to___
Anonymous Quiz
23%
Ozone layer depletion
65%
Reduction of albedo effect in polar regions
5%
Increase in ocean salinity
7%
Acidification of soil
"Dead zones" in oceans are mainly caused by __
Anonymous Quiz
5%
Overfishing
18%
Oil spills
74%
Excessive nutrient pollution leading to hypoxia
3%
Invasive species
Which of the following best explains the phenomenon of "algal blooms"?
Anonymous Quiz
14%
Excessive sunlight and water temperature rise
27%
Chemical imbalance in water due to oil spills
56%
Over-enrichment of water bodies with nutrients
3%
Increased salinity in freshwater ecosystems
Which Indian initiative focuses on afforestation to combat desertification?
Anonymous Quiz
49%
Green India Mission
7%
National Mission
8%
Make in India
36%
National Forest Mission
Which of the following is an example of environmental adaptation by humans?
Anonymous Quiz
8%
Building bridges over rivers
76%
Cultivating crops in arid regions using irrigation
8%
Building dams in mountainous areas
8%
Constructing skyscrapers in urban areas
Which of the following is the primary evidence supporting the Big Bang Theory?
Anonymous Quiz
15%
The discovery of dark matter
50%
The cosmic microwave background radiation
22%
The presence of black holes
12%
The redshift of distant galaxies
The expansion of the universe is primarily driven by __
Anonymous Quiz
35%
Gravitational forces
17%
The force of radiation
19%
Dark energy
29%
The motion of galaxies
In the context of the Big Bang Theory, "nucleosynthesis" refers to ___
Anonymous Quiz
7%
The process of star formation
17%
The collision of cosmic dust
69%
The formation of simple elements in the early universe
8%
The creation of heavier elements in stars
The discovery of dark energy in the late 1990s helped to explain the _
Anonymous Quiz
9%
Formation of galaxies
30%
Steady-state nature of the universe
39%
Origin of the Big Bang
23%
Accelerating expansion of the universe
Which theory suggests that the Earth and other planets of the solar system were formed from a rotating disk of gas and dust?
Anonymous Quiz
24%
Big Bang Theory
57%
Nebular Hypothesis
17%
Planetary Accretion Theory
2%
Tidal Hypothesis
First SAT Exam .pdf
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First SAT Exam .pdf
Information about 'Black Hole' was first provided by-
Anonymous Quiz
26%
Hermann Bondi
30%
Rutherford
18%
Copernicus
26%
S. Chandrashekhar
Which one of the following is not an Astronomical object ?
Anonymous Quiz
22%
Pulsar
16%
Brittle star
30%
Black hole
31%
Quasar
A group of stars arranged in a particular shape, is called-
Anonymous Quiz
32%
Milky Way
50%
Constellation
9%
Andromeda
8%
Solar system
What is the typical area affected by a cloudburst?
Anonymous Quiz
29%
100-200 square kilometers
46%
50-100 square kilometers
14%
20-30 square kilometers
11%
5-10 square kilometers
Which type of signal does GPS use for positioning?
Anonymous Quiz
34%
Infrared
49%
Radio waves
5%
X-rays
13%
Visible light
ক্লাসরুমের সমস্ত মেয়ে যারা এই পৃথিবীর মানব সভ্যতার সৃষ্টির অন্যতম মূল । সমস্ত নারী ও পুরুষের মা । যাদের মধ্যে নিজে শক্তিশালী হওয়ার পাশাপাশি, অপরকে শক্তিশালী করার অসম্ভব শক্তি লুকিয়ে রয়েছে । ক্লাসরুমের পক্ষ থেকে আন্তরিক অভিনন্দন ও শুভেচ্ছা জানাই । চ্যালেঞ্জটা জারি রেখে আগামীর স্বপ্নপূরণের সংকল্পটা জারি থাকুক কঠোর ভাবে । মেয়ে, মা , স্ত্রী, বউমা হওয়ার পরেও সফল ও আদর্শ মানুষ হওয়ার ইচ্ছেটা বেঁচে থাক সকল নারীর মধ্যেই 🙏 ।