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
1. What is the relation between mass and wavelength of any matter, as per de Broglie’s relation?
[A] Both are directly proportional
[B] Both are inversely proportional
[C] Both are independent of each other
[D] wavelength is twice the square of the mass
Show Answer
Correct Answer: B [Both are inversely proportional]
Notes:
According to de Broglie, every object in motion has a wave character. As per de Broglie’s relation, mass and wavelength are inversely proportional to each other.
2. In which of the following class are the pulse producing plants kept?
[A] Liliaceae
[B] Solanaceae
[C] Malvaceae
[D] Leguminosae
Show Answer
Correct Answer: D [Leguminosae]
Notes:
Pulses are part of the legume family, but the term “pulse” refers only to the dried seed. Dried peas, edible beans, lentils and chickpeas are the most common varieties of pulses. The term “legume” refers to the plants whose fruit is enclosed in a pod. Other well-known legumes include alfalfa, clover, fresh peas, lupins, mesquite, soy and peanuts.
3. Which one of the following is commonly known as Pond Silk?
[A] Yeast
[B] Rhizopus
[C] Ulothrix
[D] Spirogyra
Show Answer
Correct Answer: D [Spirogyra]
Notes:
Pond silk is the common name of Spirogyra (algae) because it is very slimy in shape. It is also known as pond silk, water silk, pond scum or mermaid’s trees because of its bright green silky appearance. Its filaments shine like silk due to the presence of mucilage and spiral shaped chloroplast.
4. What is the basis of classifying various plant tissues as meristematic tissue and permanent tissue?
[A] Size
[B] Dividing capacity
[C] Location
[D] None of the above
Show Answer
Correct Answer: B [Dividing capacity]
Notes:
Based on the dividing capacity of the tissues, various plant tissues can be classified as growing or meristematic tissue and permanent tissue. Meristem is a type of tissue system in plants, composed of a mass of undifferentiated cells and their primary function is to take part in the growth of plants. Permanent tissues are differentiated tissues doing specific functions such as conduction, providing mechanical support or carrying out photosynthesis etc.
5. The edible part of an onion is ____:
[A] Fleshy leaves
[B] Aerial stem
[C] Modified root
[D] Aerial flower
Show Answer
Correct Answer: A [Fleshy leaves]
Notes:
The edible portion in an onion is swollen leaves with a bit of stem. They are bulbs which, like garlic and leeks, are modified stems in which the primary storage tissue is expanded leaf bases. They come in white, yellow, and red varieties. The swollen leaves have sugar as stored food in them.
6. The pigment that gives human skin, hair and eyes their colour is called ____:
[A] Quinacridone
[B] Alizarin
[C] Melanin
[D] Phthalocyanine
Show Answer
Correct Answer: C [Melanin ]
Notes:
The pigment that gives human skin, hair, and eyes their color. Dark-skinned people have more melanin in their skin than light-skinned people have. Melanin is produced by cells called melanocytes. Everyone has the same number of melanocytes, but some people make more melanin than others.
7. An Antigen is ____:
[A] The result of Antibody
[B] The stimulus for Antibody formation
[C] The opposite of Antibody
[D] The residue of an Antibody
Show Answer
Correct Answer: B [The stimulus for Antibody formation]
Notes:
Antigens are defined as substances recognized by the body as foreign, causing the body to produce an antibody to react specifically with it. Antibodies are proteins produced by lymphocytes as a result of stimulation by an antigen which can then interact specifically with that particular antigen.
8. In which of the following multiple epidermis is found?
[A] Boerhaavia
[B] Nerium
[C] Amaranthus
[D] Helianthus
Show Answer
Correct Answer: B [Nerium]
Notes:
It is assumed that protodermal cells divide periclinally in certain cases to form multiseriate or multiple epidermis. The multiple epidermis is found in some organs like roots of orchids (Vanda), leaves of Ficus, Nerium, Piperomia, etc. In Nerium, it is found on both surfaces.
9. The connective tissue that connects a muscle to a bone is _____:
[A] Cartilage
[B] Ligament
[C] Interstitial fluid
[D] Tendon
Show Answer
Correct Answer: D [Tendon]
Notes:
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
10. To keep warm, polar bears have a layer of ____ under their skin:
[A] Muscle
[B] Hair
[C] Fat
[D] Cartilage
Show Answer
Correct Answer: C [Fat]
Notes:
Polar bears are supremely adapted to their environment – they have a number of traits that help them to cope with snow, ice, and below-freezing temperatures. They have a layer of fat that can be four inches (10 cm) thick. Although their fur is the primary source of insulation, the fat helps keep heat in as well.
