General Knowledge — All MCQs
5927 questions available
Q4781.Precious gemstone "Emerald" is found in
Correct Answer: A
Emerald deposits in Pakistan are especially associated with Swat, where high-quality green beryl has been mined. Swat emeralds are known internationally for their colour and clarity.
Q4782.How many aircrafts by MM Alam downed in one go?
Correct Answer: A
M. M. Alam is famous for reportedly shooting down five Indian aircraft in less than a minute during the 1965 war. The feat made him a celebrated Pakistan Air Force fighter ace.
Q4783.How many countries are there in Asia?
Correct Answer: A
Asia is commonly counted as having 48 countries in standard UN/geography teaching lists. Counts may vary slightly when transcontinental or partially recognized states are treated differently, but 48 is the standard exam figure.
Q4784.How many layers does Earth's atmosphere have?
Correct Answer: A
Earth's atmosphere is usually divided into five main layers: troposphere, stratosphere, mesosphere, thermosphere and exosphere. Since '5' is not in the options, this row should be reviewed rather than accepting '4' as scientifically complete.
Q4785.Which among the given option is the capital of Kazakhstan?
Correct Answer: B
Astana, now again officially named Astana after a period as Nur-Sultan, is the capital of Kazakhstan. Tashkent is Uzbekistan's capital, Dushanbe is Tajikistan's, and Ashgabat is Turkmenistan's.
Q4786.Mars, neighbour of Earth, has natural satellites.
Correct Answer: A
Mars has two natural satellites, Phobos and Deimos. They are small, irregularly shaped moons named after figures from Greek mythology associated with fear and terror.
Q4787.Bit also called:
Correct Answer: B
A bit is a binary digit, the smallest unit of digital information. It can hold one of two values, 0 or 1, forming the basis of computer data representation.
Q4788.Crude Oil is heated in the furnace up to
Correct Answer: C
In fractional distillation, crude oil is heated to around 400°C so that it vaporizes and its components separate at different boiling ranges. Lighter fractions rise higher in the column, while heavier fractions remain lower.
Q4789.Smooth Endoplasmic Reticulum is involved in the synthesis and storage of
Correct Answer: C
Smooth endoplasmic reticulum is involved mainly in lipid synthesis and detoxification. Rough endoplasmic reticulum is associated with protein synthesis because it carries ribosomes on its surface.
Q4790.When NaHCO3 is heated, it produces
Correct Answer: A
When sodium bicarbonate, NaHCO3, is heated, it decomposes to produce sodium carbonate, carbon dioxide and water. The release of CO2 is why baking soda helps dough rise during baking.
Q4791.Inflammation of liver is caused by
Correct Answer: B
Hepatitis means inflammation of the liver and may be caused by viruses, toxins or other factors. Cholera mainly affects the intestine, typhoid is a systemic bacterial disease, and jaundice is a symptom rather than the basic inflammatory disease.
Q4792.Enzymes are basically made up of:
Correct Answer: D
Most enzymes are proteins made of amino acid chains folded into specific three-dimensional shapes. Their shape creates an active site that speeds up biochemical reactions by lowering activation energy.
Q4793.What is the life span of red blood cells?
Correct Answer: C
Red blood cells normally live for about 120 days before being removed mainly by the spleen and liver. Their lifespan is linked to the durability of haemoglobin-carrying cells that lack a nucleus in humans.
Q4794.Parthenocarpy is the production of fruit which makes the fruit
Correct Answer: B
Parthenocarpy is the development of fruit without fertilization, producing seedless fruit. Common examples include seedless bananas and some varieties of grapes and oranges.
Q4795.Which tube among the following Joins kidneys and bladder?
Correct Answer: B
The ureters are the tubes that carry urine from the kidneys to the urinary bladder. The urethra carries urine from the bladder out of the body, so it is a different part of the urinary tract.
Q4796.The pancreatic juice which aids digestion is secreted into?
Correct Answer: B
Pancreatic juice is secreted into the duodenum, the first part of the small intestine. It contains digestive enzymes and bicarbonate that help digest food and neutralize acid from the stomach.
Q4797.Villi are small finger like structures in the
Correct Answer: B
Villi are finger-like projections in the small intestine that increase surface area for absorption. Their structure helps absorb digested nutrients efficiently into blood and lymph.
Q4798.Which among the following is responsible for the clotting of the blood?
Correct Answer: B
Platelets help blood clot by forming plugs at injured blood vessels and releasing clotting factors. Red blood cells carry oxygen, while white blood cells mainly defend against infection.
Q4799.Mastication is called the process of:
Correct Answer: C
Mastication means chewing, the mechanical breakdown of food in the mouth. It mixes food with saliva and prepares it for swallowing and digestion.
Q4800.What is the colour of Oxyhaemoglobin?
Correct Answer: B
Oxyhaemoglobin, formed when oxygen binds to haemoglobin, is bright red. Deoxygenated blood appears darker red because haemoglobin changes colour when it releases oxygen.