Shortcut to minimize workbook in Excel:
Correct answer is: D. Ctrl + F9
Ctrl + F9 minimizes the Excel workbook window.
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1 added to largest 4-digit number gives:
Correct answer is: B. 10000
The largest 4-digit number is 9999; adding 1 gives 10000.
Next number in series 1, 1, 2, 6, 24, ?
Correct answer is: B. 120
The series follows n! (factorial): 1=1!, 1=1!, 2=2!, 6=3!, 24=4!, so 120=5!.
Which substance is used as a foaming agent in fire extinguisher?
Correct answer is: C. Aluminium hydroxide
Used to create foam for suppressing fire, especially in Class B fires.
A refrigerator works on the principle of:
Correct answer is: A. Thermodynamics
Refrigerators use thermodynamic cycles to transfer heat and cool the inside.
Which air gas is the main cause of increased temperature (global warming)?
Correct answer is: B. Carbon Dioxide
CO? traps heat in the atmosphere and is the primary greenhouse gas.
Free oxygen is available on which planet?
Correct answer is: B. Earth
Only Earth has breathable oxygen in the atmosphere.
Insulin is secreted by:
Correct answer is: D. Pancreas
The pancreas produces insulin to regulate blood glucose levels.
Mount Tambora, the site of one of the largest volcanic eruptions in recorded history (1815), is located in which country?
Correct answer is: C. Indonesia
Mount Tambora is in Indonesia and erupted massively in 1815, affecting global climate.