RRB ALP 2018 Practice Test Papers | General Science (Day-20)

Dear Aspirants, Here we have given the Important RRB ALP & Technicians Exam 2018 Practice Test Papers. Candidates those who are preparing for RRB ALP 2018 can practice these questions to get more confidence to Crack RRB 2018 Examination.

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1) Which of the following instrument used for measuring the intensity of radiation, especially ultraviolet radiation?

1. Anemometer
2. Actinometer
3. Altimeter
4. Chronometer

2) Brake works on the basis of which of the following force?

1. Motion
2. Acceleration
3. Gravity
4. Friction

3) If lift is going down with acceleration, the apparent weight of a body is _________ than the true weight

1. less
2. Greater
3. Equals to
4. Zero

4) The Phenomenon of rise or depression of liquids in a capillary tube is called _________

1. Periodic Motion
2. Turbulent Flow
3. Capillarity
4. Viscosity

5) 1 cal = ?

1. 2.15 joule
2. 5.16 joule
3. 4.16 joule
4. 4.18 joule

6) Blue colour of the sky is due to

1. None of these
2. Scattering of Light
3. Refraction of light
4. Gatherings of Light

7) pH value of Sea water is

1. 6.5 and 7.4
2. 6.4 and 7.5
3. 7.5 and 8.4
4. 74.and 8.5

8) A sliced apple turns brown if kept open due to ___________

1. Emission
2. Galvanisation
3. Corrosion
4. Oxidation of iron

9) Which of the following cell division is as source of new genetic variation and evolution?

1. Mitosis
2. Meiosis
3. RNA
4. Proteins

10) Which of the following enzyme acts upon proteins and breaks them into polypeptides?

1. Pepsin
2. Trypsin
3. Sucrose
4. Lactase

Answers :

1). Answer: b)

Actinometers are instruments used to measure the heating power of radiation. They are used in meteorology to measure solar radiation as pyranometers, pyrheliometers and net radiometers. An actinometer is a chemical system or physical device which determines the number of photons in a beam integrally or per unit time.

2). Answer: d)

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

3). Answer: a)

4). Answer: c)

Capillarity is rise or depression of a liquid in a small passage such as a tube of small cross-sectional area, like the spaces between the fibers of a towel or the openings in a porous material. Capillarity is not limited to the vertical direction. Water is drawn into the fibers of a towel, no matter how the towel is oriented.

5). Answer: d)

The calorie was first defined by Nicolas Clément in 1824 as a unit of heat energy.

6). Answer: b)

A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

7). Answer: c)

Seawater pH is typically limited to a range between 7.5 and 8.4.

8). Answer: d)

Apples and other produce (e.g., pears, bananas, peaches, and potatoes) contain an enzyme (called polyphenol oxidize or tyrosine’s) that reacts with oxygen and iron-containing phenols that are also found in the apple. The oxidation reaction basically forms a sort of rust on the surface of the fruit.

9). Answer : b)

Meiosis is a specialized type of cell division that reduces the chromosome number by half, creating four haploid cells, each genetically distinct from the parent cell that gave rise to them.

10). Answer: b)

Trypsin acts with the other proteinases to break down dietary protein molecules to their component peptides and amino acids.

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