General Science problems
- 1. Which of the following is a chemical property?
Options- A. Reactivity
- B. Solubility
- C. Density
- D. All of the above Also asked in: AIEEE, Bank Exams, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: Reactivity
Explanation:
The ability of two or more substances to combine to form other substances is called Reactivity.
- 2. Which of these is a starting point for primary succession?
Options- A. a surface exposed by a retreating glacier
- B. a neglected yard
- C. abandoned farmland
- D. an abandoned city Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: a surface exposed by a retreating glacier
Explanation:
Primary succession is the orderly and predictable series of events through which a stable ecosystem forms in a previously uninhabited region. Primary succession occurs in regions characterized by the absence of soil and living organisms.
- 3. The closest algal relatives of land plants are
Options- A. charophytes
- B. chrysophytes
- C. rhodophytes
- D. bacillariophytes Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk
Correct Answer: charophytes
Explanation:
The charophytes are the extant group of green algae that are most closely related to modern land plants.
- 4. Which molecules prevent cell membranes from dissolving in water?
Options- A. Phospholipids
- B. Fattyacids
- C. Adenosine triphosphates
- D. None of the above Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: Phospholipids
Explanation:
Cell membranes are made up of phospholipids which prevents them from dissolving in water.
- 5. Which of the following is a healthy blood pressure level?
Options- A. 120/80 mmHg
- B. 140/90 mmHg
- C. 90/60 mmHg
- D. 120/140 mmHg Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: 120/80 mmHg
Explanation:
Healthy blood pressure ranges from 120/80 to 90/60.
- 6. What is a single celled organism called
Options- A. protoctists
- B. chromosomes
- C. unicellular
- D. bicellular Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: unicellular
Explanation:
An organism is a living thing, and there are two broad categories of organisms: those made up of only a single cell, and those made up of multiple cells.
Single-celled organisms means which contains only one cell are called unicellular organisms. 'Uni-' means 'one,' so the name 'unicellular' literally means 'one cell.'
Examples of Unicellular or Single celled organisms ::
Prokaryotic organisms like Bacteria,...
Some algae like green algae, euglena,...
- 7. Food handlers can contaminate food when they Also asked in: Analyst, Bank Clerk, Bank PO
Correct Answer: 1) If they use the same cutting board/counter to cut raw chicken, and other foods with out sanitizing in between 2) If they have a cold, flu, or pink eye and are handling food, coughing without covering their mouth, then washing their hands 3) If they don't properly wash their vegetables 4) Not storing foods at proper temperatures And so many other reasons for Food handlers can contaminate food
- 8. The term protoplasm was coined by
Options- A. Hugo von Mohl
- B. J. E. Purkinje
- C. Oken
- D. Kolliker Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: J. E. Purkinje
- 9. As water is cooled from 4 deg C to 0 deg C, its density
Options- A. decreases
- B. increases
- C. remains same
- D. zero Also asked in: Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: decreases
Explanation:
When water is cooled from 4°C to 0°C, its density decreases.
When water cools from 4°C to 0°C, ice crystals begin to form because the water is approaching its freezing point. When water freezes, the water molecules form a lattice that increases the volume. As a result, the density decreases. This is why ice will float on top of water; ice has a lower density than the water.
- 10. The amount of water vapor in the air is called
Options- A. Saturated air
- B. Precipitation
- C. Humidity
- D. Capacity Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: Humidity
Explanation:
The amount of water vapor in the air is called Humidity. The amount of water vapor that air acn hold depends on the temperature of the air. The amount of water vapor in the air as compared with the amount of water that the air could hold is called Relative humidity.
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