10 PM Daily Current Affairs Quiz | July 31 2021

Which of the following event/events produces the “Gravitational Waves”?
1. Colliding black holes.
2. Massive stars exploding at the end of their lifetimes.
3. Super Cyclones.
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Which of the following is/are the examples of sublimation substances?
1. Menthol
2. Iodine
3. Dry ice
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Which of the following statements is/are correct about “Oxides of Sulfur”?
1. It is a colorless gas that can be detected by taste and smell.
2. It is hard to dissolve in water.
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Which of the following statements is/are correct about “Styrene”?
1. It is a colorless liquid that evaporates easily and has a sweet smell.
2. It doesn’t dissolve easily in water.
3. Low levels of styrene also occur naturally in a variety of foods such as fruits, vegetables, nuts, beverages, and meats.
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Which of the following statements is/are correct about “Arthropod”?
1. They are everywhere and are the largest animal phylum.
2. Arthropods are cold blooded animals.
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Which of the following gases are created at the beginning of universe?
1. Hydrogen
2. Helium
3. Lithium
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PFAS (Per- and polyfluoroalkyl substances), is often seen in news is associated with which of the following?

The polarimetry technique is recently in news is related to which of the following?

Consider the following statements regarding the Black Hole:
1. A black hole is a place in space where gravity pulls so much that even light cannot get out.
2. The super-massive black hole at the center of the Milky Way galaxy is called Sagittarius A.
3. The Sun is not a big enough star to make a black hole.
Which of the statements given above is/are correct?