Washing Soda is the common name for

NDA NA Exam I 2015 Questions

Question 84 Washing Soda is the common name for

A) Calcium Carbonate
B) Magnesium Carbonate
C) Sodium Carbonate
D) Potassium Carbonate

Answer: Sodium Carbonate

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Which one among the following does not wet the walls of the glass vessel in which it is kept?

NDA NA Exam I 2015 Questions

Question 94 Which one among the following does not wet the walls of the glass vessel in which it is kept?

A) Water
B) Alcohol
C) Mercury
D) Phenol

Answer: Mercury

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Permanent hardness of water is due to presence of

NDA NA Exam I 2015 Questions

Question 95 Permanent hardness of water is due to presence of

A) sulphates of sodium and potassium
B) sulphates of magnesium and calcium
C) carbonates of sodium and magnesium
D) bicarbonates of magnesium and calcium

Answer: sulphates of magnesium and calcium

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• Washing Soda is the common name for
• Why is graphite used in electrolytic cells?
• In plants, which one of the following gases is released during Photosynthesis?
• Which one of the following irrigation canals is the most important in terms of area coverage in Haryana?
• Rain shadow effect is associated with
• The chemical used as a fixer / developer in photography is
• The cleansing action of soap and detergent is due to the formation of
• Which one among the following is used in making gun powder?
• Optical fibres, though bent in any manner allows light to pass through. What is the inference that one can draw from it?
• The newly formed state of Telengana is surrounded by

Thermal conductivity of aluminium, copper and stainless steel increases in the order

NDA NA Exam I 2015 Questions

Question 118 Thermal conductivity of aluminium, copper and stainless steel increases in the order

A) Copper < Aluminium < Stainless Steel
B) Stainless Steel < Aluminium < Copper
C) Aluminium < Copper < Stainless Steel
D) Copper < Stainless Steel < Aluminium

Answer: Stainless Steel < Aluminium < Copper

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Muddy water is treated with alum in purification process, it is termed as

Question 64 Which of the following is the sweetest sugar?

A) glucose
B) maltos
C) fructose
D) lactose

Answer: fructose

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Question 65 Muddy water is treated with alum in purification process, it is termed as:

A) emulsification
B) coagulation
C) adsorption
D) absorption

Answer: coagulation

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The ore of Aluminium is

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Question 97 The ore of Aluminium is

A> Fluorospar
B> Bauxite
C> Hematite
D> Chalco pyrites

Answer: Bauxite

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Heavy metals got their name compared to other atoms they have

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Question 75) The environment (Protection) Bill was passed by the Parliament of India in -

A) 1984
B) 1986
C) 1981
D) 1972

Answer: 1986

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Question 76 Heavy metals got their name compared to other atoms they have

A) Higher atomic numbers
B) Higher densities
C) Higher atomic radii
D) Higher atomic masses

Answer: Higher densities

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When a helium atom loses an electron it becomes

Question 73 When a helium atom loses an electron it becomes:

A) A positive helium ion

B) A negative helium ion

C) An alpha particle

D) A proton

Answer:  A positive helium ion (He+)

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Waksman got the Noble prize for the discovery of

Question 57 Waksman got the Noble prize for the discovery of:

A> Streptomycin
B> Neomycin
C> Penicillin
D> Chloromycetin

Answer:  Streptomycin

Explanation: In 1952, Selman Waksman was awarded Noble prize for his discovery of Streptomycin, the first antibiotic effective against tuberculosis.

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Question 58 The oldest form of composition of Hindustani vocal music is

A> Thumri
B> None of the options
C> Dhrupad
D> Ghazal

Answer: Dhrupad

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Peroxyacetyl nitrate is a

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Question 51 Peroxyacetyl nitrate is a 

A> Acidic dye
B> Plant hormone
C> Vitamin
D> Secondary pollutant

Answer: Secondary pollutant

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What happens when a drop of glycerol is added to crushed KMNO4 spread on a paper?

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Question 94 What happens when a drop of glycerol is added to crushed KMNO4 spread on a paper?

A> There is a crackling sound.
B> There is a violent explosion.
C> There is no reaction.
D> The paper ignites.

Answer: The paper ignites.

Question 95 Most commonly used bleaching agent is

A> Sodium chloride
B> Alcohol
C> Carbon  dioxide
D> Chlorine

Answer: Chlorine

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Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily lose active oxygen?

Question 96 The least penetrating power ray is

A> X ray
B> alpha ray
C> beta ray
D> gamma ray

Answer: alpha ray

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Question 97 Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily lose active oxygen?

A> Nasant Hydrogen
B> Water
C> Hydrogen
D> Ozone

Answer: Water

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CAPF 2015 Solved Questions Chemistry and Maths

Post 380

UPSC CAPF(AC) Exam 2015 Questions Solved

Question 26

Answer: A) 2 1 4 3

Explanation : 

• Colour of Coumpound Urea is White
• Colour of Hydrous copper sulphate is Blue
• Colour of Lead sulphide is Black
• Colour of Potassium Permanganate is Pinkish Purple

Question 27 The radius of a hydrogen atom is 10 to the power(-10) m. Number of hydrogen atoms necessary to have a length of one nanometre is

A) 6.023 x 10 power23
B) 10
C) 5
D) 100

Answer: C) 5

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Question 28 What is the average number of students studying in Standard I from all schools together?

A) 50

B) 48

C) 43

D) 46

Answer: D) 46

Question 29 What is the respective ratio of students studying in Standard III of schools A and B together to those studying in Standard VI of schools C and D together?

A) 53 : 52

B) 43 : 47

C) 25 : 27

D) 39 : 38

Answer: A) 53 : 52

Landform feature and locations CAPF Questions

Post 379

UPSC CAPF(AC) Exam 2015 Questions Solved

Question 30

Answer: A) 4 1 2 3

Explanation :

• Alluvial fans is located in Moutain Foothills
• V shaped valleys location Moutainous Areas
• Deltas form on Coasts
• Ox-bow lakes are located in Lower Reaches of the river

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Question  31

Answer: A) 4 2 1 3

Explanation : Tropical Cyclones and their locations

• Cyclones - India
• Hurricanes - East Asia
• Typhoons - USA
• Willy-willies - Australia

Question 32 

Answer: C) 4 1 2 3

Explanation: Elements and their applications

• Isotopes of Uranium is used for Nuclear fuel
• Isotpe of Cobalt is used for Treatment of Cancer
• Isotope of Iodine is used for Treatment of goitre
• Isotope of Radium is used for Treatment of secondary cancer

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Arrange the following National Parks of India from North to South direction

Post 377

UPSC CAPF(AC) Exam 2015 Questions Solved

Question 37 Arrange the following National Parks of India from North to South direction

1. Indravati National Park
2. Nagarhole National Park
3. Corbett National Park
4. Madhav National Park
A) 1,3,2,4
B) 2,1,4,3
C) 3,4,1,2
D) 2,3,4,1

Answer: C) 3,4,1,2

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Question 38 Which one of the following statements is correct?

A) Iron sulphate and copper sulphate crystals have same number of water of crystallization
B) Iron sulphate and zinc sulphate crystals have same number of water of crystallization
C) Zinc sulphate and copper sulphate crystals have same number of water of crystallization
D) Iron sulphate, copper sulphate and zinc sulphate crystals each have same number of water of crystallization

Answer: C) Zinc sulphate and copper sulphate crystals have same number of water of crystallization

Question 39

Answer: C) 3 1 2 4

Explanation : Scientist and their area of study

• JD Watson - Molecular Biology
• Louis Pasteur - Microbiology
• Carl Linnacus - Taxonomy
• Charles Darwin - Evolution

Question 40 If in a certain language NEOMAN is coded as OGRQFT, then ZKCLUP is the code of:

A) YJBKTO
B) YIZHPJ
C) YIAQKJ
D) YIZIRM

Answer: B) YIZHPJ

The inert gas used as beacon light is

Post 303

SSC CHSL Questions 2014

Question 174 The inert gas used as beacon light is

A) Kr

B) Ar

C) He

D) Ne

Answer: Ne (Neon) gas

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The chemical name of baking soda is

Post 300

SSC CHSL Questions 2014

Question 166 The chemical name of baking soda is

A) Sodium carbonate

B) Sodium bicarbonate

C) Sodium Chloride

D) Sodium Nitrate

Answer: Sodium bicarbonate (NaHCO3)

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Question 167 Chemical formula of washing soda is

A) Na2SO4.10H2O

B) NaHCO3

C) Na2CO3.10H2O

D) Ca(OH)2

Answer: Na2CO3.10H2O

Question 168 Hydrochloric acid is also known as

A) Galic acid

B) Picric acid

C) Muriatic acid

D) Chloric acid

Answer: Muriatic acid

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Chemical name of common salt is

Post 257

SSC CHSL Questions 2014

Question 159 Chemical name of common salt is

A) Sodium Chloride

B) Sodium Bicarbonate

C) Sodium

D) Sodium Oxide

Answer: Sodium Chloride is the chemical name of common salt.

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Which one of the following mineral does not contain oxygen?

Post 253

SSC CHSL Questions 2014

Question 151 Which one of the following mineral does not contain oxygen?

A) Haematite
B) Bauxite
C) Cryolite
D) Calcite
Answer: Cryolite
Explanation: Cryolite does not contain oxygen. Chemically Cryolite Na3AlF6 is sodium hexafluoroaluminate.

Question 152 A non electronic conductor is 

A) Iron
B) Gas Carbon
C) Copper Sulphate
D) Mercury
Answer: Doubt b/w Copper Sulphate and gas carbon. ?If you know the correct answer please mail to gksea.com@gmail.com or just comment below with reason.

Question 153 Which of the following will replace hydrogen from acids to form salts?

A) S
B) Na
C) Ag
D) P
Answer: Na

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Which of the following lamps contains a poisonous gas and therefore should be disposed safely?

Post 249

CAPF Exam 2014 Questions

Question 116 Which of the following lamps contains a poisonous gas and therefore should be disposed safely?

A) Compact Fluorescent Lamp
B) Light Emitting Diode
C) Neon lamp
D) Halogen Lamp
Answer: Compact Fluorescent Lamp
Because it contains Mercury.

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