Previous Years Based SSC GK (General Knowledge) MCQs
31. What is done to raise the dough while making bread?
[A] Alcohol is added
[B] Yeast is added
[C] Carbon dioxide is passed
[D] Air is passed
Show Answer
Correct Answer: B [Yeast is added]
Notes:
Yeast is used to make bread dough. Yeast feeds on the sugar contained with the dough, producing carbon dioxide and alcohol, in a process called fermentation. During bread making, the dough is left in a warm place. The warmth causes fermentation to take place.
32. How dehydration helps in the preservation of food?
[A] Growth of micro-organism is checked
[B] Nutrients are concentrated
[C] Surface of food stuffs becomes hard
[D] Chemical reactions stop in the absence of water
Show Answer
Correct Answer: A [Growth of micro-organism is checked]
Notes:
Dehydration is the process of removing water or moisture from a food product. By reducing the moisture content of the product, the dehydration process makes it possible to limit microbial growth or other reactions.
Dehydrated foods are ideal for backpacking, hiking, and camping because they weigh much less than their non-dried counterparts and do not require refrigeration.
33. Which of the followings should be avoided by the Heart patients?
[A] Proteins
[B] Fats
[C] Vitamins
[D] Carbohydrates
Show Answer
Correct Answer: B [Fats]
Notes:
Heart patients should avoid fried fast food and processed foods containing vegetable shortening. They should choose a variety of oils (extra virgin olive oil, canola, peanut) and foods containing natural fats (nuts, seeds, avocado, olives, soy, fish). They should switch to low-fat or non-fat dairy products.
Eating many fruits and vegetables not only can help prevent heart disease, but also may help improve blood pressure and cholesterol levels, and improves diabetes.
34. Which among the followings is more required by the Growing children?
[A] Proteins
[B] Carbohydrates
[C] Vitamins
[D] All of these
Show Answer
Correct Answer: A [Proteins]
Notes:
Growing kids need protein to help them build and repair cells, enzymes, and hormones, and, as a last resort, to provide energy. Protein foods also help form new blood cells and body tissues, and they help the nervous system function properly.
35. Why mothers feed the child with Vitamin A?
[A] To prevent rickets
[B] To prevent beriberi
[C] To prevent night blindness
[D] To prevent polio
Show Answer
Correct Answer: C [To prevent night blindness]
Notes:Night blindness is the inability to see well at night or in poor light. Its causes include glaucoma medications and cataracts. It is also caused by the deficiency of Vitamin A.
36. Conception generally takes place at which of the following times?
[A] Menses
[B] Before menses
[C] Immediately after menses
[D] Two weeks after menses
Show Answer
Correct Answer: D [Two weeks after menses]
Notes:The egg can be fertilized for 12 to 24 hours after it’s released as it travels down the fallopian tube toward the uterus. If an egg meets up with a sperm cell that has made its way into the fallopian tube, it combines into one cell, a process that’s known as fertilization or conception. It happens two weeks after menses.
37. In which of the following situations the Identical twins are born?
[A] Two sperms fertilise one ovum
[B] Two sperms fertilise two ovums simultaneously
[C] One sperm fertilises the ovum and zygote divides into two separate cells developing independently
[D] One sperm fertilises two ovums
Show Answer
Correct Answer: C [One sperm fertilises the ovum and zygote divides into two separate cells developing independently]
Notes:
Identical twins form when one egg has been fertilised by one sperm and the zygote splits into two. This happens at the very earliest stage of development, when the zygote is no more than a cluster of a few cells. If this egg then splits into two, an identical twin pregnancy can result.
38. Rickets is caused due to the deficiency of which of the following vitamins?
[A] Vitamin A
[B] Vitamin D
[C] Vitamin C
[D] Low intake of proteins
Show Answer
Correct Answer: B [Vitamin D]
Notes:
Rickets is a skeletal disorder that’s caused by a lack of vitamin D, calcium, or phosphate. These nutrients are important for the development of strong, healthy bones. People with rickets may have weak and soft bones, stunted growth, and, in severe cases, skeletal deformities.
39. Why is it advisable not to draw current for many appliances from a single point?
[A] Current will decrease
[B] Current will increase
[C] Current and voltage both will increase
[D] Voltage will decrease whereas current will increase
Show Answer
Correct Answer: D [Voltage will decrease whereas current will increase]
Notes:
If too many appliances draw power from one socket, the voltage will decrease whereas current will increase. The appliances can start overheating and catch fire.
40. What is the function of a fuse wire?
[A] To prevent an unduly high electric current from passing through a circuit
[B] To increase the current supply
[C] To decrease the current supply
[D] To stabilise the voltage
Show Answer
Correct Answer: A [To prevent an unduly high electric current from passing through a circuit]
Notes:
In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide over current protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby interrupting the current.
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