Q761. The formula for baking soda is
A NaHCO₃ B K₂CO₃ C KHCO₃ D Na₂CO₃
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Correct answer: NaHCO₃
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Q762. CPR stands for: CPR stands for
A Cardiopulmonary revision B Cardiopulmonary Resuscitation C Cardio program rescue D Cardiac pulsatile revision
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Correct answer: Cardiopulmonary Resuscitation
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Q763. The only vein that carries oxygenated blood is
A Hepatic portal vein B Cardiac vein C Pulmonary vein D Cystic vein
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Correct answer: Pulmonary vein
Concept note
Q764. Diabetes, which is a very common disorder, is associated with
A Pancreas B Liver C Kidney D Gall bladder
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Correct answer: Pancreas
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Q765. The reason for the global pause due to the recent COVID-19 pandemic is
A MERS-CoV-2 B SARS-CoV-2 C SARS-CoV-1 D H5N1
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Correct answer: SARS-CoV-2
Concept note
Q766. What are the plants and animals that live on land called?
A Biotic B Terrestrial Habitants C Abiotic D Aquatic habitants
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Correct answer: Terrestrial Habitants
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Q767. The joint where the neck meets the head
A Ball and socket joint B Hinge joint C Pivotal joint D Saddle joint
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Correct answer: Pivotal joint
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Q768. Milk is an example of what?
A Emulsion B Aerosols C Foam D Sol
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Correct answer: Emulsion
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Q769. What is R21/Matrix-M™?
A Vaccine against AIDS developed by Bharat Biotech International B Vaccine against AIDS developed by Serum Institute of India C Vaccine against malaria developed by Serum Institute of India D Vaccine against malaria developed by Bharat Biotech International
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Correct answer: Vaccine against malaria developed by Serum Institute of India
Concept note
Q770. Which of the following groups has only input devices?
A Mouse, Keyboard, Scanner B Mouse, Keyboard, Monitor C Mouse, Keyboard, Printer D Mouse, Keyboard, Projector
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Correct answer: Mouse, Keyboard, Scanner
Concept note
Q771. Which part of the computer memory remains non-volatile even when the power supply is exhausted?
A ROM B REM C RAM D None of the above
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Correct answer: ROM
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Q772. Which of the following represents the correct relationship between Fahrenheit (°F) and Celsius (°C) degrees?
A °F = °C − 273.15 B °F = (9/5 × °C) + 32 C °C = (9/5 × °F) + 32 D °C = °F − 273.15
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Correct answer: °F = (9/5 × °C) + 32
Concept note
Q773. Which of the following statements is not correct?
A The functional unit of DNA is called a gene. B Chromosomes reserve information for inheritance. C Chromosomes are made up of DNA and proteins. D The nucleus of a cell does not play any role in cellular division/reproduction.
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Correct answer: The nucleus of a cell does not play any role in cellular division/reproduction.
Concept note
Q774. Match List-I with List-II and select the correct answer using the code given below the lists: List–I (Vitamins) List–II (/Disease) A. vitamin A 1. Beriberi B. vitamin B 2. Blindness C. vitamin C 3. Ricketts D. vitamin D 4. Scurvy Code : A B C D A B C D
A 1 3 2 4 B 1 2 3 4 C 4 3 2 1 D 2 1 4 3
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Correct answer: 2 1 4 3
Concept note
Q775. Consider the following statements: 1. Scientific inquiry depends on a commitment to practical ideals. 2. Honesty is especially important in science. Choose the correct answer from the code given below
A Statement 1 is correct, 2 is unexpected. B Statement 1 is correct, 2 is not. C Both statements 1 and 2 are correct. D Both statements 1 and 2 are incorrect.
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Correct answer: Both statements 1 and 2 are correct.
Concept note
Q776. Which of the following is the correct sequence of stages of biotic succession?
A Migration → Establishment → Reaction → Stabilization B Migration → Reaction → Stabilization → Establishment C Stabilization → reaction → migration → installation D Installation → Migration → Stabilization → Reaction
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Correct answer: Migration → Establishment → Reaction → Stabilization
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Q777. Given below are two statements, one of which is called Assertion (A) and the other is called Reason (R) – Assertion (A): Relative humidity decreases with the increase in air temperature. Reason (R): Absolute Humidity increases with increased evaporation. Choose the correct answer from the code
A (A) is true, but (R) is false. B Both (A) and (R) are true and (R) correctly explains (A). C Both (A) and (R) are correct but (R) does not correctly explain (A). D (A) is incorrect, but (R) is true.
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Correct answer: Both (A) and (R) are correct but (R) does not correctly explain (A).
Concept note
Q778. Given below are two statements, one of which is Assertion (A) and the other is Reason (R)— Assertion (A): CO₂, SO₂ and NO₂ gases dissolve in rainwater and produce acid rain. Reason (R): Atmospheric air is polluted due to high concentrations of gases such as carbon dioxide, sulfur dioxide and oxides of nitrogen. Choose the correct answer from the code
A (A) is true, but (R) is false. B Both (A) and (R) are correct, but (R) does not explain (A) correctly. C Both (A) and (R) are correct and (R) correctly explains (A). D (A) is incorrect, but (R) is true.
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Correct answer: Both (A) and (R) are correct and (R) correctly explains (A).
Concept note
Q779. What does the Intergovernmental Panel on Climate Change (IPCC) emphasize with regard to the reduction of greenhouse gas (GHG) emissions? 1. Gradual and limited deductions are sufficient. 2. Deep, intense, and continuous cuts are essential. Select the correct answer
A 2 only B 1 only C Both 1 and 2 D Neither 1 Nor 2
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Correct answer: 2 only
Concept note
Q780. Consider the following days and arrange them in chronological order: 1. World Health Day 2. National Maritime Day 3. World Athletics Day 4. World Red Cross Day Code: A B C D
A 3, 2, 1, 4 B 2, 3, 4, 1 C 4, 3, 1, 2 D 1, 3, 2, 4
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Correct answer: 1, 3, 2, 4
Concept note