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
31. Which of the following disease is not caused by metal toxicity?
[A] Minamata
[B] Dermatitis
[C] Itai-Itai
[D] Both Minamata and Itai-Itai
Show Answer
Correct Answer: B [Dermatitis]
Notes:
Dermatitis, also known as?eczema, is a group of diseases that results ininflammationof the?skin. These diseases are characterized by?itchiness, red skin, and a rash. Itai-Itai is caused by cadmium poisoning and Minamata due to mercury poisoning.
32. Which of the following is used for wrapping of fractured bones?
[A] Zinc oxide
[B] Plaster of Paris
[C] White cement
[D] White lead
Show Answer
Correct Answer: B [Plaster of Paris]
Notes:
Plaster of Paris is a plaster made by calcining gypsum.
CaSO4•1/2?H2?O.
It can be used to impregnate gauze bandages to make a sculpting material called modroc. It is used to make classic plaster orthopedic casts to protect limbs with broken bones.
33. DNA fingerprinting is used to identify the _____:
[A] Parents
[B] Thieves
[C] Rapist
[D] All of the above
Show Answer
Correct Answer: D [All of the above ]
Notes:
DNA profiling (genetic finger printing) is a technique employed by forensic scientists to assist in the identification of individuals by their respective DNA profiles. DNA profiles are encrypted sets of numbers that reflect a person’s DNA makeup, which can also be used as the person’s identifier. Each individual has unique VNTR numbers and pattern except maternal twins.
34. What would be the formula of Fructose?
[A] C12H22O11
[B] C6H12O6
[C] C12H19Cl3O8
[D] C6H10O8
Show Answer
Correct Answer: B [C6H12O6]
Notes:
Fructose, or fruit sugar, is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose. It is a 6-carbon polyhydroxyketone with chemical formula of C6H12O6.
35. Yellow spots on citrus leaves is due to the deficiency of _____:
[A] Zinc
[B] Iron
[C] Boron
[D] Magnesium
Show Answer
Correct Answer: D [Magnesium]
Notes:
The deficiency of magnesium leads to yellowish green blotch near the base of the leaf between the midrib and the outer edge (chlorosis). The yellow area enlarges until the only green remaining is at the tip and base of the leaf as an inverted V-shaped area on the midrib.
36. Iodoform is used as an _____:
[A] Antiseptic
[B] Analgesic
[C] Anaesthetic
[D] Antipyretic
Show Answer
Correct Answer: B [Analgesic]
Notes:
Iodoform is the organoiodine compound with the formula CHI3. A pale yellow, crystalline, volatile substance, it has a penetrating odor and, analogous to chloroform, sweetish taste. It is occasionally used as a disinfectant. Adolf Hitler’s mother, Klara Hitler, died of iodoform poisoning brought on by her treatment for breast cancer.
37. Opium is a plant product obtained from _____:
[A] Dried leaves
[B] Dried latex
[C] Stem bark
[D] Roots
Show Answer
Correct Answer: B [Dried latex]
Notes:
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
38. The term gene was coined by _____:
[A] De Vries
[B] T. H. Morgan
[C] W. L. Johanssen
[D] G. Mendel
Show Answer
Correct Answer: C [W. L. Johanssen]
Notes:
Wilhelm Johannsen was a Danish botanist, plant physiologist and geneticist. His most well-known research concerned so-called pure lines of the self-fertile common bean. He was able to show that even in populations homozygous for all traits, i.e. without genetic variation, seed size followed a normal distribution. This was attributable to resource provision to the mother plant and to the position of seeds in pods and of pods on the plant. This led him to coin the terms phenotype and genotype and introduce the term gene. This term was coined in opposition to the then common pangene that stemmed from Darwin’s theory of pangenesis.
39. The main function of palisade parenchyma in leaf is _____:
[A] Pollutants
[B] Antibiotics
[C] Hormones
[D] Toxins
Show Answer
Correct Answer: D [Toxins]
Notes:
Palisade parenchyma is the layer of tissue directly beneath the epidermis of the upper surface of a leaf. It contains the cylinder-shaped cells that hold the chloroplasts and constitutes the primary area of photosynthesis that converts the light energy to the chemical potential energy of carbohydrates.
40. Dolly was an example of cloned ____:
[A] Dog
[B] Cow
[C] Sheep
[D] Hen
Show Answer
Correct Answer: C [Sheep]
Notes:
Dolly was the world’s first cloned sheep. It was born on 5 July 1996. It was a female domestic sheep, and the first mammal cloned from an adult somatic cell, using the process of nuclear transfer. Dolly was cloned by Ian Wilmut, Keith Campbell and colleagues at the Roslin Institute, part of the University of Edinburgh, Scotland.