R4RIN – MCQs, Mock Tests | CSS[FPSC-U.S. Civil Service Commission]-USA [USA] Current Affairs 2021 Set 12

X-rays were discovered by

1. Otto Hahn
2. Edwin Hubble
3. Wilhelm Rontgen
4. Ernest Rutherford

✅ Correct Answer: 3

The Nobel prize in physics for the discovery of the law of photoelectric effect was awarded to

1. Newton
2. Einstein
3. Rontgen
4. Rutherford

✅ Correct Answer: 2

The symbol of gold is

1. Au
2. Ag
3. Fe
4. Sg

✅ Correct Answer: 1

Plaster of Paris can be produced by heating

1. Graphite
2. Gypsum
3. Zinc
4. Lead

✅ Correct Answer: 2

Which from the following is NOT true about Helium gas?

1. Colourless
2. Odorless
3. Tasteless
4. Toxic

✅ Correct Answer: 4

Which is the largest excretory organ of the body

1. lungs
2. skin
3. liver
4. none of these

✅ Correct Answer: 2

The brain is enclosed in a bony case called

1. diaphragam
2. vertebral column
3. cranium
4. vertebrae

✅ Correct Answer: 3

Which is the bone that is present in forelimb

1. radius
2. femur
3. ribs
4. sternum

✅ Correct Answer: 1

Which one is herbivore

1. cat
2. dog
3. cow
4. lion

✅ Correct Answer: 3

Which structure helps in transport of water in plants

1. phloem
2. leaf
3. bark
4. xylem

✅ Correct Answer: 4

The organisms that can make their own food are called

1. producers
2. consumers
3. secondary consumers
4. decomposers

✅ Correct Answer: 1

Bacteria are

1. eukaryotes
2. prokaryotes
3. non-living
4. none of these

✅ Correct Answer: 2

Bile juice is secreted by

1. pancreas
2. stomach
3. intestine
4. gall bladder

✅ Correct Answer: 4

Which part of the blood cells provide immunity

1. RBC
2. WBC
3. platelet
4. blood plasma

✅ Correct Answer: 2

Which structure prevent water loss in plants

1. cuticle
2. bark
3. mesophyll
4. leaf

✅ Correct Answer: 1

DNA structure was first described by

1. Pasteur
2. Robert Koch
3. Robert Koch
4. Carlous Linnaues

✅ Correct Answer: 3

Pollination is best defined as

1. germination of pollen grains
2. transfer of pollen from anther to stigma
3. formation of pollen grains
4. none of these

✅ Correct Answer: 2

Movement of cell against concentration gradient is called

1. active transport
2. osmosis
3. diffusion
4. both b and c

✅ Correct Answer: 1

One of the following is not a function of bones

1. support
2. production of blood cells
3. protein synthesis
4. muscle attachment

✅ Correct Answer: 3

Plants absorb most part of water needed by them through their

1. stem
2. root hairs
3. leaf
4. bark

✅ Correct Answer: 2

Highly intelligent mammals are

1. rat
2. bat
3. dolphin
4. elephant

✅ Correct Answer: 3

Process of cell division take place by

1. mitosis
2. fertilization
3. reproduction
4. none of these

✅ Correct Answer: 1

Prokaryotic cell lack

1. nucleolus
2. nuclear membrane
3. both a and b
4. none of these

✅ Correct Answer: 3

Pulses are a good source of

1. proteins
2. carbohydrates
3. vitamins
4. minerals

✅ Correct Answer: 1

Plants that grow in dry habitat are called

1. hydrophytes
2. xerophytes
3. shrubs
4. herbs

✅ Correct Answer: 2

Oxygen released in the process of photosynthesis comes from

1. water
2. oxygen
3. carbon dioxide
4. nitrogen dioxide

✅ Correct Answer: 1

Phloem tissue is found in

1. liver
2. placenta
3. plants
4. none of these

✅ Correct Answer: 3

Plant bends towards the source of light on account of the movement known as

1. geotropism
2. hydrotropism
3. chemotropism
4. phototropism

✅ Correct Answer: 4

Animal lacks

1. starch
2. cellulose
3. protein
4. lipids

✅ Correct Answer: 2

On which of the following plants did Gregor Mendal perform his classical experiment

1. corn
2. mustard
3. pea
4. sunflower

✅ Correct Answer: 3

Among the biotic components of the ecosystem, the producer system is

1. carnivores
2. herbivores
3. plants
4. animals

✅ Correct Answer: 3

Breeding and management of bees is known

1. agriculture
2. sericulture
3. horticulture
4. apiculture

✅ Correct Answer: 4

Study of fossils is called

1. psychology
2. paleontology
3. biodiversity
4. haematology

✅ Correct Answer: 2

Which is an example of fungi

1. paramecium
2. euglena
3. penicillium
4. octopus

✅ Correct Answer: 3

The scientific name of human is

1. Homo sapiens
2. Homo habiscus
3. Oriza sativa
4. none of these

✅ Correct Answer: 1

Thread like structures in fungi are called

1. mycelium
2. hyphae
3. sporangium
4. spores

✅ Correct Answer: 2

The smallest bacteria on earth is

1. mycoplasma
2. E.coli
3. salmonella
4. clostridium

✅ Correct Answer: 1

Vaccine for rabies was developed by

1. Robert Koch
2. Robert Brown
3. Pasteur
4. none of these

✅ Correct Answer: 3

Malaria is caused by

1. mosquito
2. plasmodium
3. virus
4. bacteria

✅ Correct Answer: 2

Hepatitis is inflammation of

1. stomach
2. kidney
3. lungs
4. liver

✅ Correct Answer: 4

Penicillin is obtained from

1. soil
2. bacteria
3. fungi
4. virus

✅ Correct Answer: 3

Which one is endoparasite?

1. lice
2. ticks
3. virus
4. tape worm

✅ Correct Answer: 4

Fructose is

1. pentose sugar
2. hexose sugar
3. heptose sugar
4. none of these

✅ Correct Answer: 1

Peptide bond is a

1. C-N link
2. N-H link
3. C-O link
4. N-O link

✅ Correct Answer: 2

Which statement is correct about enzymes?

1. protein in nature
2. speed up reaction
3. denature at high temperature
4. all of these

✅ Correct Answer: 4

Which is called power house of the cell

1. golgi complex
2. mitochondria
3. nucleus
4. endoplasmic reticulum

✅ Correct Answer: 2

The structure that is absent in animal cell

1. cell wall
2. nulcleus
3. centriole
4. mitochondria

✅ Correct Answer: 1

The non-protein part of enzyme is called

1. co-enzyme
2. activator
3. cofactor
4. substrate

✅ Correct Answer: 3

Nucleic acid were first isolated by

1. Erwin Chargaff
2. Friedrich Miescher
3. Rosalind Franklin
4. none of these

✅ Correct Answer: 2

One of the following is not pyrimidine

1. thymine
2. cytosine
3. guanine
4. uracil

✅ Correct Answer: 3