RRB NTPC Mock Test - 5 (English) - RRB NTPC/ASM/CA/TA MCQ

• The ores of Aluminium are - Bauxite, Corundum, Felspar, Cryolite, Alunite and Kaolin. 
• Chalcocite is an important copper mineral ore
• The process of extracting metal in pure form from its ore is known as metallurgy. 

• MADAD stands for Mobile Application for Desired Assistance During travel.
• The app was launched by Railway Minister Piyush Goyal along with other app named "Menu on Rails".
• The apps were launched to ease the travelling experience of the passengers.
• The aim of Rail MADAD app is to expedite and streamline passenger complaints redressal.
• The aim of Menu on Rails is to provide the list of meals and beverages available in trains with their prices.

• The satellite GSAT-11 is known as the "Big bird". It is the heaviest (5,854 kg) satellite of India.
• The ISRO's satellite was launched by Ariane 5 rocket in December 2018 from the French space port of Kourou in South America.
• The Hyper-Spectral Imaging Satellite (HysIS) was successfully launched by PSLV-C43 in November 2018, from Satish Dhawan Space Centre (SDSC) in Sriharikota.
• GSAT-29 launched by ISRO in November 2018, is a communication satellite to improve the communication networks, specifically in the Jammu and Kashmir and North East.
• Microsat-R is a defence satellite for the Defence Research and Development Organisation (DRDO) launched by the PSLV.

• Anshuman Rath is the captain of the Hong Kong cricket team.
• The team won the 2018 Asia Cup Qualifier under his captainship. Hong Kong defeated UAE.
• 2018 Asia Cup was won by India, defeating Bangladesh.
• William Porterfield is the captain of Ireland cricket team.
• Kyle Coetzer is the captain of Scotland cricket team.
• Paras Khadka is the captain of the Nepal team

• Persons suffering Hypermetropia use Convex lens.
• Hypermetropia, also known as far sightedness, is the disorder in which a person cannot see the nearby objects clearly but can see the distant objects clearly.
• Concave lens are used for Myopia, in which person can see the nearby objects but fail to see the distant objects.
• Bifocal lens are used in case of Presbyopia, in which power of accommodation of the eye decreases. In bifocal lenses the upper portion contains the concave lens, while the lower part contains the convex lens.
• Convexo-concave lens is a type of concave lens in which one side is bulged out (which forms the convex side) and the other side is concave, which is thin in the middle and thick at the edges.

• Atomic mass unit is defined in terms of carbon-12 (C-12).
• The atomic mass unit is used to express atomic and molecular weights and it is equal to one-twelfth of the mass of the one C-12 atom.
• The atomic weight of the hydrogen atom is used to compare the atomic weight of other elements.
• N-15 is the non-radioactive, stable isotope of nitrogen. N-13, N-14, N-15, etc. are the other isotopes of nitrogen.
• C-14 is an radioactive isotope of carbon used in carbon dating (determining the age of carbonaceous materials). C-12, C-13, and C-14 are the isotopes of carbon.

• The study of grass is known as Agrostology.
• The study of soil management and the production of crop plants is known as Agronomy.
• The study of medicinal plants is known as Pharmacognosy.
• The study of shrubs and trees is known as Dendrology.

Let us check for all option,

1) 49 > 7 > 6 ≥ 7, False

2) 49 = 7 + 6 + 7, False

3) 49 = 7 + 6 - 7, False

4) 49 = 7 × 6 + 7, True

Hence, "=, ×, +” is the correct set of sign.

• Ethylene is known as the "Fruit ripening gas".
• The chemical formula of Ethylene (Ethene) is C₂H₄.
• It is the simplest alkene (compounds containing carbon-carbon double bond).
• Methane (CH₄), the simplest alkane (compounds containing carbon-carbon single bond), is known as Marsh gas.
• Propane is an alkane containing 3 carbon atoms (chemical formula - C₃H₈)

• Trypanosoma is a protozoan. It is the causative pathogen for African Sleeping Sickness.
• Sycon belongs to phylum Porifera.
• Fasciola belongs to phylum Platyhelminthes. It is known as "sheep liver fluke" as it causes disease in sheep and cattle.
• Nereis belongs to phylum Annelida.

Note: Left and right end depend on the direction of the people. If people are facing North then the left end will be in the west and the right end will be in East but if people are facing South then left end for them will be in East and right end will be West.

Persons in row 2 are facing South. Hence the right end of row 2 is opposite to the right end of the persons of row 1 who are facing North.

Hence, Pari is sitting at the extreme right of row-2.

The section of the triangle that neither intersect with rectangle nor with circle represents the doctors that are neither artists nor singers.
The number of doctors who are neither artists nor singers is 17.

The section of the triangle that intersect with both rectangle and circle represents the doctors that are both artists and singers.
The number of doctors who are both singers and artists is 3.

• Radioactive pollution can occur due to two reasons as natural and artificial. UV and IR radiations are natural radiations whereas X-rays and radiations from atomic energy plants are artificial radiations.
• Chernobyl, Windscale, and Three Miles Island mishaps are the major mishaps of the world to the present. Thousands of people have been affected for the long term due to these accidents.
• Some of the effects of radiations are as follows-

1. Cancerous ulceration occurs due to higher radiations of X-rays.
2. Tissues in the body are destroyed.
3. Genetic changes occur.
4. Vision is adversely affected.

1) TRONIENG = NITROGEN
2) YGENOX = OXYGEN
3) GONRA = ARGON
4) LFIEDIEQU PEROELMUT = LIQUEFIED PETROLEUM (it is not a gas present in air)
Hence LFIEDIQU PEROELMUT is the correct answer.

1) David’s rank was immediately after Dev. Dev’s rank is better than all of them.

Dev > David > ….. > ….. > ….. > ……

2) Dheer got the poorest rank among them all.

Dev > David > ….. > ….. > ….. > Dheer

3) Dharmesh got better rank than three of them.

Dev > David > Dharmesh > ….. > ….. > Dheer

4) Daniel got a bettar rank than Dennise.

Dev > David > Dharmesh > Daniel > Dennise > Dheer

Note: Dheer got the least rank, Dennise got second least rank, Daniel got third least rank, Dharmesh got fourth least rank, David got fifth least rank and Dev got sixth least rank.​

pH of some common aqueous solutions

F’s mother is A.

Daughter of C is D.

Thus, A is mother of D.

Hence, the correct answer is mother.

From the given information,

Based on given data, we can draw family tree-

Lady’s son’s father is the husband of the lady.

The husband of the lady is the son-in-law of Jaya’s mother.

So, the lady is the daughter of Jaya’s mother.

Thus, Jaya is the sister of the Lady.

Code for provide is 83

Code for idea is not given, therefore we will check all the options:

1) 86 89 ⇒ False (code of provide i.e. 83 is not present)

2) 80 79  ⇒ False  (code  of  provide  i.e. 83 is not present)

3) 89 83 ⇒ True (83 for provide and 89 for idea is possible because 89 is not given in the above code)

4) 83 80 ⇒ False (Provide is coded as 83 and either for or only is coded as 80)

The pattern for the code is as follows,

Each letter of the given word is replaced by its adjacent letters.

Similarly,

Therefore, BLUE is coded as ACKMTVDF.

So, the answer is option (3).

The pattern followed is:

A = 1 so, 1² = 1 so, 1 = A.

B = 2 so, 2² = 4 so, 4 = D.

C = 3 so, 3² = 9 so, 9 = I.

D = 4 so, 4² = 16 so, 16 = P ≠ R

E = 5 so, 5² = 25 so, 25 = Y.

So, the wrong term is DR.

The pattern followed here is:

8 + 5 = 13

13 + 10 = 23

23 + 15 = 38

38 + 20 = 58

58 + 25 = 83

Similarly,

83 + 30 = 113

Hence, 113 is a term which will complete the series.

Image (i): the shaded portion of the central semi-circle is in west direction while the = sign bar is in West direction.

Image (ii): the shaded portion of the central semi-circle and the = sign bar are in North direction.

Image (iii): the shaded portion of the central semi-circle and the = sign bar are in West direction.

Image (iv): the shaded portion of the central semi-circle and the = sign bar are in North direction.

In all other figures, shaded portion of the central semi-circle and the = sign bar come on the same side except for figure (i).

Hence, figure (i) is the correct answer.