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Mixed Test (CTET)

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Which of the following orgamisms could be the cause of 'Liver rot' disease?

  1. Taenia

  2. Typhlops

  3. Trypanosoma

  4. Fasciola

  5. None of these


Correct Option: D
Explanation:

Fasciola hepatica, also known as the common liver fluke or sheep liver fluke, is a parasitic flatworm of the class Trematoda, phylum Platyhelminthes that infects the livers of various mammals, including humans.

Thromboplastin factor VII, proconvertin is an example of ____________.

  1. glycoprotein

  2. plasma protein

  3. proteolipid

  4. lipoprotein

  5. none of these


Correct Option: B
Explanation:

Plasma proteins are proteins found in the blood plasma, the clear, protein-rich fluid, which is left behind when platelets, red blood cells and white blood cells are removed from the blood. These proteins play a number of important roles in the human body, and levels of plasma proteins are sometimes evaluated in a laboratory analysis to gather information about a patient's general health and specific health issues, which a patient may be experiencing. Plasma proteins make up around 7% of the total blood volume with levels which can fluctuate at times.

What is dry ice?

  1. Ice dust

  2. Liquified nitrogen

  3. Liquified H2

  4. Solid CO2

  5. None of these


Correct Option: D
Explanation:

Dry Ice is the common name for solid carbon dioxide (CO2). It got this name because it does not melt when heated; instead, it changes directly into a gas (This process is known as sublimation). Due to its extremely low temperature of -78°, dry ice is often used as an alternative to refrigeration of foodstuffs and medical supplies. In addition, special dry ice pellets are used for industrial cleaning.

Food stocks which are built up during the years of bumper crop are called _________.

  1. capital stock

  2. buffer stock

  3. production stock

  4. grain stock

  5. none of these


Correct Option: D
Explanation:

The current amount of harvested grain crops stored domestically, including both on-farm and off-farm storage sites. The USDA reports quarterly on the amount of grain stocks in storage and includes corn, soybeans and wheat. The amount of commercial grain stock is relevant for the supply of these grains, which are used in a large array of food products. 

A plant that exhibits vivipary is ___________.

  1. litchi

  2. rhizophora

  3. mango

  4. pinus

  5. all the above


Correct Option: B
Explanation:

Vivipary is the condition whereby the embryo (the young plant within the seed) grows first to break through the seed coat then out of the fruit wall while still attached to the parent plant. This condition is found in Bruguiera and Rhizophora species.Rhizophora stylosa's fertilised seeds do not drop from the plants but begin to germinate, growing out from the base of the fruits to form long, spear-shaped stems and roots called propagules. They may grow in place, attached to the parent tree, for one to three years, reaching lengths of up to one metre, before breaking off from the parent and falling into the water

What is the main cause of Tsunami?

  1. Volcanoes

  2. Cyclones

  3. Earthquake on sea floor

  4. Moon’s attraction

  5. All of the above


Correct Option: C
Explanation:

A tsunami is usually caused by a powerful earthquake under the ocean floor. This earthquake pushes a large volume of water to the surface, creating waves. These waves are called the tsunami.

Which of the following is/are good source(s) of vitamin E?

  1. Meat

  2. Ghee

  3. Yellow yolks

  4. Fresh vegetables

  5. All of these


Correct Option: D
Explanation:

Fresh vegetables are a good source of vitamine E such as spinach, broccoli, red bell peppers, etc. Vitamin E is a vitamin that dissolves in fat. It is found in many foods including vegetable oils, cereals, meat, poultry, eggs, fruits, vegetables, and wheat germ oil. 

Which of the following compounds can cause the poisoning of drinking water?

  1. Arsenic compound

  2. Iron compound

  3. Magnesium compound

  4. Zinc compound

  5. Calcium compound


Correct Option: A
Explanation:

Arsenic is introduced into water through the dissolution of rocks, minerals and ores, from industrial effluents, including mining wastes, and via atmospheric deposition. Arsenic related illness is usually caused by consumption of contaminated drinking water. Humans can develop resistance to certain arsenic concentrations. Shortly after absorption arsenic can be found in liver, spleen, lungs and digestive tract. Most arsenic is excreted, and residues may be found in skin, hair, nails, legs and teeth. Under conditions of prolonged exposure, many organs may be damaged, skin pigmentation may occur, hair may fall out and nail growth may stop.

The heating element of electric iron is made up of which of the following substances?

  1. Copper

  2. Tungsten

  3. Nichrome

  4. Zinc

  5. None of these


Correct Option: C
Explanation:

Nichrome is used in electric iron because it has high resistance and is stable in air when hot. Nichrome wire forms a protective layer of chromium oxide.

Bile is secreted by __________.

  1. gall bladder

  2. liver

  3. bile duct

  4. pancreas

  5. none of these


Correct Option: B
Explanation:

Bile is a bitter tasting, dark green to yellowish brown fluid produced by the liver of most vertebrates. It is secreted by the liver, stored in the gallbladder and discharged into the duodenum. It is a composition of water, bile salts, mucus and pigments, fats, inorganic salts and cholesterol.

The largest organ of the human body is ___________.

  1. the heart

  2. the brain

  3. the liver

  4. kidney

  5. skin


Correct Option: E
Explanation:

The skin is the largest organ in a human body. It is made up of multiple layers of ectodermal tissues. The skin protects the body against pathogens and excessive water loss. It also helps in temperature regulation and protection of vitamin D folates.

"Van Mahotsav" was initiated by ________.

  1. A. K. Banerjee

  2. K. M. Munishi

  3. Sunder Lal Bahuguna

  4. Amrita Devi Bishnoi

  5. Medha Patkar


Correct Option: C
Explanation:

Sunderlal Bahuguna is a noted Garhwali environmentalist, Chipko Movement leader and a follower of Mahatma Gandhi's philosophy of non-violence and Satyagraha. This idea of Chipko Movement was of his wife and the action was taken up by him. 

The process of protecting iron made water pipes with zinc layering to prevent corrosion is called __________.

  1. zinc plating

  2. alloy formation

  3. vulcanization

  4. galvanization

  5. none of these


Correct Option: D
Explanation:

Process in which a zinc film is deposited on goods made of steel to provide long term (generally 10 to 30 years) corrosion protection and abrasion resistance. Two common galvanizing processes are (1) Hot metal bath: about 250 years old but still a popular method in which the item is immersed in molten zinc to deposit a 50 to 150 micron thick film. (2) Electro-deposition: a more recent method in which a 5 to 30 micron thick film of zinc is deposited electrochemically.

Decibel is a term connected with which of the following physical factors?

  1. Air volume

  2. Water

  3. Sound

  4. Soil

  5. None of these


Correct Option: C
Explanation:

Intensity of sound is measured in decibles. The decibel measures sound pressure or electrical pressure (voltage) levels. It is a logarithmic unit that describes the ratio of two intensities, such as two different sound pressures, two different voltages and so on.

The planet nearest to the sun is __________.

  1. Earth

  2. Mercury

  3. Mars

  4. Venus

  5. Jupiter


Correct Option: B
Explanation:

Mercury is the closest planet to the sun. The closest planet to the sun is Mercury. It is the innermost planet in our solar system and has a diameter of 3030 miles. German scientist Johannes Hevelius (1611 - 1687) was among the first to observe a Mercurial transit and discovered the Mercurial phases.

The mirror used in the headlights of vehicles is __________.

  1. a plane mirror

  2. a concave mirror

  3. a convex mirror

  4. a parabolic mirror

  5. none of these


Correct Option: D
Explanation:

Parabolic mirrors are used in car headlights to concentrate and focus the light in one direction. Without these mirrors, one would either waste the indirect light or the light would shine in all directions, which would blind the driver.

Yield sown early after the inception of South-West monsoon in India is called _____________.

  1. rabi

  2. kharif

  3. rainfed

  4. dry farming

  5. none of these


Correct Option: C
Explanation:

The term Rainfed agriculture is used to describe farming practises that rely on rainfall for water.

The process of metamorphosis of rocks may involve _________.

  1. sandstone turning into quartzite

  2. limestone becoming marble

  3. shale getting converted into slate

  4. all of the above

  5. none of these


Correct Option: D
Explanation:

It is correct.

Which of the following substances can increase the antiknocking property of petrol?

  1. Tetramethyl lead

  2. Tetraethyl Lead

  3. Trimethyl Lead

  4. Triethyl Lead

  5. None of these


Correct Option: B
Explanation:

A colourless, poisonous, oily liquid, Pb(C2H5)4, used in gasoline for internal-combustion engines as an antiknock agent.(TEL) a lead compound used as an additive to increase the octane rating and reduce the knock or detonation tendencies of gasoline. One gram of lead increases the octane of one gallon of gasoline to about 6 numbers. The EPA has phased down the use of lead in gasoline as it has been determined to be a health hazard. Lead has been prohibited in highway vehicle gasoline since January 1, 1996.

Meningitis is a disease which affects the __________.

  1. kidneys

  2. liver

  3. heart

  4. brain

  5. none of these


Correct Option: D
Explanation:

Meningitis is inflammation of the meninges. The meninges is the collective name for the three membranes that envelope the brain and spinal cord (central nervous system), called the dura mater, the arachnoid mater, and the pia mater. The meninges' main function, alongside the cerebrospinal fluid is to protect the central nervous system.

Cement can be formed by heating the mixture of ___________________ at a very high temperature.

  1. limestone and graphite

  2. limestone and clay

  3. chalk and graphite

  4. clay and graphite

  5. none of these


Correct Option: B
Explanation:

Cement is a fine, soft, powdery-type substance.  It is made from a mixture of elements that are found in natural materials such as limestone, clay, sand. When cement is mixed with water, it can bind sand and gravel into a hard, solid mass called concrete.

The temperature of oxy-acetylene flame is around ________.

  1. 2800 degree Celsius

  2. 3300 degree Celsius

  3. 4000 degree Celsius

  4. 1500 degree Celsius

  5. None of these


Correct Option: B
Explanation:

Acetylene torch is 6000 degrees Fahrenheit or 3315 degrees Celsius. The oxy-acetylene flame is used in the torch and this flame can melt any commercial metal.

Which is the most stable eco-system?

  1. Desert

  2. Ocean

  3. Mountain

  4. Forest

  5. None of these


Correct Option: A
Explanation:

Deserts host animals and plants living in what strikes many human as hostile environments. In  eco systems many plants compete for sunlight  but in deserts,  plants are adapted to shorten the effects of too much solar energy. The plants life cycles goes dormant as the desert conditions become unfavourable with time, making some plants to quickly germinate, renew and flower their species before annual moisture dries up.

Sound travels fastest through _________.

  1. Steel

  2. Air

  3. Vacuum

  4. Water

  5. None of these


Correct Option: A
Explanation:

Sound travels fastest in solids. This is because the molecules in solids are close together, which makes it easier for the vibrations to pass from one molecule to the next.Speed of sound : Metal (5000 m/s).

Rubber is obtained from the latex of _________.

  1. stem of Euphorbia spp

  2. stem of Carica papaya

  3. stem of Hevea brasiliensis

  4. fruit of Achras sapota

  5. all of these


Correct Option: C
Explanation:

Source of Hevea or Para Rubber, obtained by tapping the trunks of the trees. The latex coagulates with the aid of acetic acid, formic acid, and alum. Cured rubber used for all types of rubber products. Seeds are source of Para Rubber seed oil, recommended for manufacture of soap. 

Which of the following phenomena do bats and dolphins follow to search for their prey?

  1. Refraction of sound

  2. Smell of blood

  3. Scattering of sound

  4. Echo location

  5. All of these


Correct Option: D
Explanation:

Echolocation is the system bats and marine mammals use to navigate in the dark when hunting prey. Equivalent to sonar or radar, echolocation is the production of sound used for communication. Echolocation is the use of ultra-high frequency sounds for navigation and locating prey.

The process used to convert vegetable oil into ghee is __________.

  1. Crystallisation

  2. Condensation

  3. Hydrogenation

  4. CO2 scrubbing

  5. None of these


Correct Option: C
Explanation:

Hydrogenation is widely applied to the processing of vegetable oils and fats. Complete hydrogenation converts unsaturated fatty acids to saturated ones. In practice the process is not usually carried to completion. 

Which of the following feature do birds have due to which they are able to swim in water?

  1. Webbed feet

  2. Broad wings

  3. Long beaks

  4. Toes with claws

  5. All of these


Correct Option: A
Explanation:

Webbed feet or toes have a piece of skin between the toes. Sea fowl is the name for birds with webbed feet that are frequent visitors to the coast and the open ocean. These birds include seagulls, pelicans, and albatross. These birds can also be called sea birds, or aquatic birds.

Rusting of iron is due to the reaction of iron with ______.

  1. oxygen and cabon dioxide

  2. oxygen and water

  3. cabon dioxide only

  4. oxygen only

  5. carbon dioxide and water


Correct Option: B
Explanation:

The mixture of iron with oxygen from water and in the air is what causes rust. When moisture or water meets with iron, oxygen in the water combines with atoms of the iron to form iron oxide. The iron oxide is the reddish coating on the surface which is commonly referred to as rust.

‘Brown Revolution’ is ___________.

  1. growth of fodder industry

  2. growth of sea products

  3. growth of milk and milk products

  4. growth of food processing and soft drinks industries in India

  5. all of these


Correct Option: D
Explanation:

Basically, Brown Revolution in India means to recycle all polluting, stinking, deadly garbage for composting and for power generation in all big,small and metro cities in India. It is related to the development of Non-conventional energy resources.

Revoltuion in India | Area Blue Revolution - Fish Brown Revolution - Non-conventional energy resources Grey Revolution - Wool Golden Revolution - Horticulture Pink Revolution - Shrimp/Meat White Revolution - Milk Yellow Revolution - Oil seeds

A balloon filled with helium rises in air because __________.

  1. air exerts an upward force on the balloon

  2. the balloon is weightless

  3. helium is less dense than air

  4. helium pushes down on the air below the balloon

  5. all of these


Correct Option: C
Explanation:

A helium balloon rises because helium is less dense than air, which contains oxygen and nitrogen. Helium is a lighter and smaller molecule than both oxygen and nitrogen.

Electrostatic precipitator is used to control __________.

  1. air pollution

  2. water pollution

  3. solid waste

  4. noise pollution

  5. none of these


Correct Option: A
Explanation:

An electrostatic precipitator (ESP), or electrostatic air cleaner is a particulate collection device that removes particles from a flowing gas (such as air) using the force of an induced electrostatic charge. Electrostatic precipitators are highly efficient filtration devices that minimally impede the flow of gases through the device, and can easily remove fine particulate matter such as dust and smoke from the air stream.

If magnet bar is divided into two equal pieces what will be the pole strength of each piece?

  1. It becomes double

  2. It becomes half

  3. It becomes zero

  4. It remains the same

  5. Will loose its magnetism


Correct Option: D
Explanation:

This is the correct answer as each bar of magnet has two poles and even when if cut into half its pole strength will remain the same.

The total number of bones in adult human body is __________.

  1. 206

  2. 260

  3. 306

  4. 360

  5. None of these


Correct Option: A
Explanation:

An adult human body has 206 bones. An infant may have from 300-350 bones at birth. Many of these fuse together as the infant grows. When some bones fuse and become one bone (most obvious examples are in the skull, sacrum and hip bones) the number of overall bones drops to the 206 bones that most adults have. 

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