In which organism of the kingdom Monera, cell wall is not found?
(A) bacteria
(B) blue green algae
(C) mycoplasma
(D) powdery mildew
Which contrasting character did Mendel not choose for his experiment?
(A) pod color
(B) seed color
(C) flower color
(D) root color
In protein synthesis, different types of amino acids are brought to the ribosome where proteins are made?
(A) m-RNA
(B) r-RNA
(C) t-RNA
(D) All of the above
What is the conversion of FeCl3 to FeCl2 called?
(A) oxidation
(B) degradation
(C) decomposition
(D) conjugate
The conversion of ferric chloride (FeCl₃) to ferrous chloride (FeCl₂) is not specifically called "degradation." Instead, it is a type of chemical reaction known as a reduction reaction. In this process, ferric chloride (FeCl₃), which contains iron in the +3 oxidation state, gains electrons and is reduced to ferrous chloride (FeCl₂), where iron is in the +2 oxidation state. The reduction reaction involves the gain of electrons, leading to a decrease in the oxidation state of iron.
Manikya (Ruby) and Sapphire are the oxides of?
(A) calcium
(B) aluminum
(C) silicone
(D) Silver
Manikya, also known as ruby, and sapphire are gemstones that are forms of the mineral corundum. Corundum is not an oxide but rather a crystalline form of aluminum oxide (Al₂O₃). Both ruby and sapphire are varieties of corundum, with ruby being red due to the presence of chromium impurities, and sapphire coming in various colors, except red (which would be classified as ruby), often due to different trace elements.
Amphoteric oxide is-
(A) aluminum
(B) zinc oxide
(C) Both A and B
(D) None of these
An amphoteric oxide is a type of oxide that can act as both an acid and a base. This means it can react with both acids and bases, either accepting or donating protons (H⁺ ions) depending on the pH of the solution. Amphoteric oxides exhibit this dual behavior because they have both acidic and basic properties. Aluminum oxide (Al₂O₃) and zinc oxide (ZnO) are examples of common amphoteric oxides.
Which of the following shows the correct relationship?
(A) 1 volt = 1 joule x 1 coulomb
(B) 1 volt = 1 joule / 1 coulomb
(C) 1 volt = 1 coulomb/1 joule
(D) 1 volt = 1 joule / 1 coulomb
1 volt = 1 joule / 1 coulomb
This equation represents the definition of voltage (in volts). It states that one volt is equal to one joule of energy per one coulomb of charge. Voltage measures the electric potential difference between two points and is a fundamental concept in electrical physics.
The indigenously made Atmospheric Water Generator (AWG) by which Navratna company can make water from the moisture in the atmosphere?
(A) Gail India Limited
(B) Bharat Electronics Limited
(C) Bharat Heavy Electronics Limited
(D) steel authority of India
Seed therapy is used to treat what?
(A) aids
(B) tuberculosis
(C) cancer
(D) asthma
Radiation seed therapy, especially with Cesium-131, is an innovative tool in the fight against cancer.
Which gas is filled in the balloons used to get information about weather related changes?
(A) hydrogen
(B) helium
(C) oxygen
(D) nitrogen
Helium: It is an inert gas that is lighter than air. It is non-flammable.
Get the Examsbook Prep App Today