General Science Questions (MCQs) for Competitive Examinations
General Science Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations. These questions are part of GKToday’s 35000+ MCQs Bank Course in GKToday Android App
21. The blue pigment of Molluscan blood is hemocyanin from?
[A] Iron
[B] Magnesium
[C] Copper
[D] Manganese
Show Answer
Correct Answer: C [Copper]
Notes:
The blue pigment of Molluscan blood is hemocyanin from Copper. Haemocyanin is the pigment found in the blood of molluscs, crustaceans, and arthropods.
22. Which one of the following is a limbless lizard?
[A] Hemidactylus
[B] Chamelion
[C] Anguis
[D] Phrynosoma
Show Answer
Correct Answer: C [Anguis]
Notes:
Anguis is a limbless or legless lizard in the family Anguidae. They are also called slowworms or blindworms.
23. Which protein is commonly found in mammalian milk?
[A] Keratin
[B] Casein
[C] Caffeine
[D] None of these
Show Answer
Correct Answer: B [Casein]
Notes:
Casein protein is commonly found in mammalian milk. Casein is a family of related phosphoproteins. Milk is a good source of calcium, magnesium, phosphorus, potassium, selenium, and zinc.
24. Fish oil is obtained from which of the following oily fish?
[A] mackerel
[B] tuna
[C] Both 1 and 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: C [Both 1 and 2]
Notes:
Fish oil derived from oily fish like mackerel, tuna, herring, and salmon is rich in omega 3 fatty acids and is very good for the body, especially in lowering triglyceride levels.
25. Guanine from fish scales is in the production of __ and __
[A] nail polish and lipsticks.
[B] paints and plastics
[C] necklace and pendents
[D] None of these
Show Answer
Correct Answer: A [nail polish and lipsticks.]
Notes:
Guanine from fish scales is in the production of nail polish and lipsticks.
26. A small band of dense, white, and fibrous elastic tissue is grouped as __
[A] ligament
[B] muscle junction
[C] muscle filament
[D] muscle cartilage
Show Answer
Correct Answer: A [ligament]
Notes:
A ligament is a small band of dense, white, fibrous elastic tissue.
27. The bladder is lined with __ epithelium.
[A] Simple columnar
[B] Transitional
[C] Stratified squamous
[D] Simple cuboidal
Show Answer
Correct Answer: B [Transitional]
Notes:
Unlike the mucosa of other hollow organs, the bladder is lined with transitional epithelium. It is able to stretch significantly to accommodate a large volume of urine. And it also provides protection to the underlying tissues from acidic or alkaline urine.
28. Why is excretion a vital process in the human body?
- It helps to remove waste products from the body.
- It helps in maintaining the body’s internal environment by regulating chemical composition.
- It aids in the synthesis of crucial biomolecules.
- It generates energy by breaking down food substances.
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1, 2 & 3
[D] 1, 2, 3 & 4
Show Answer
Correct Answer: A [Only 1 & 2]
Notes:
Excretion is a vital process as it removes waste products from the body and helps in maintaining the body’s internal environment by regulating the chemical composition of blood and other bodily fluids. It does not aid in the synthesis of crucial biomolecules or generate energy by breaking down food substances, which are processes associated with metabolism and digestion, respectively.
29. Ovum receives the sperm in the region of__
[A] Animal pole
[B] the Equator
[C] Vegetal pole
[D] Pigmented area
Show Answer
Correct Answer: C [Vegetal pole]
Notes:
Ovum receives the sperm in the region of the Vegetal pole. An embryo is divided into two hemispheres: the animal ovule and the vegetative pole within a blastula.
30. A test is used to determine the sex of the fetus:
[A] Amniocentesis
[B] Amyliodogenesis
[C] Amnionic
[D] Fluidic
Show Answer
Correct Answer: A [Amniocentesis]
Notes:
A test is used to determine the sex of the fetus is Amniocentesis.
