Secondary sector includes:
Secondary sector includes manufacturing and industry. It is also known as production sector. The examples are food industry, textiles, construction,... View Article
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The full form of alu is?
The full form of ALU is arithmetic logic unit. It is a combinational digital circuit that performs artihmetic operations on... View Article
A molecule which can’t exist theoretically is: (A) SF4 (B) OF2 (C) OF4 (D) O2F2?
Answer: (C) OF4 Valency of Oxygen = 4 Valency of Flourine = 1 But, Oxygen cannot exhibit valency of 4.... View Article
Alkali metals in each period have: (A) Smallest size (B) Highest Electronegativity (C) Lowest Ionisation Energy (D) Highest Ionisation Energy
Answer: (C) Lowest Ionisation Energy
The potential difference between A and B in the following situation is:
As per the given diagram VA – 2 x 5 + 10 – 1 x 7 – 5 = VB... View Article
What coefficient of AgNO3 is required to balance the following equation? Cu + AgNO3 → Cu(NO3)2 + Ag
The answer is 2. Cu+2AgNO3⟶Cu(NO3)2+2Ag
Which of the following fungi is a parasite on mustard? (A) Albugo candida (B) Puccinia (C) Graminis tritici (D) Saccharomyces cerevisiae
Answer: (A) Albugo candida
What do you mean by eka – aluminium?
Eka aluminum is meant as element Gallium.
Name the second best conductor of heat.
The second best conductor of heat is Copper Materials which have good mobility of electrons are called conductors
The number of waves made by a bohr electron in an orbit of maximum magnetic quantum number +2 is?
The number of waves made by a bohr electron in an orbit of maximum magnetic quantum number +2 is 3.... View Article
Aspirin has the formula C9H8O4. How many atoms of oxygen are there in a tablet weighing 360mg?
C9H8O4 = 9 x 12 + 8 x 1 + 16 x 4 = 180 Mole = (Given weight)/Mole weight ... View Article
Starting from Lewis structure, determine the hybridization types of the central atom of TeCl4 and ICl4^-.
Lewis dot structures reflect the electronic structures of the elements, including how the electrons are paired. (TeCl4–) TeCl4– has 6... View Article
20 ml of 0.2M Al2(SO4)3 is mixed with 20ml of 6.6 M BaCl2 , the concertration of Cl – ion in solution is: 1) 0.2 2) 6.6 3) 0.02 4) 0.06
Answer: (2) 6.6 M 20mL of 0.2M Al2(SO4)3 is mixed with 20mL of 6.6M BaCl2 Concentration of Cl– = (Total... View Article
A reaction occurs spontaneously if: (A)TΔS=ΔH and both ΔH and ΔS are positive (B) TΔS>ΔH and both ΔH and ΔS are positive (C) TΔS>ΔH and both ΔH and ΔS are positive (D)TΔS>ΔH and both ΔH and ΔH is positive and ΔS is negative.
If a reaction is spontaneous, then, ΔG=−ve Since, ΔG=ΔH−TΔS ΔH=+ve, ΔS=+ve and TΔS>ΔH Therefore, ΔG < 0
Draw Nitrogen Cycle and explain it.
Nitrogen Cycle is a biogeochemical process which transforms the inert nitrogen present in the atmosphere to a more usable form... View Article
In which of the following compounds _OH is the functional group? (A) Butanone (B) Butanal (C) Butanol (D) Butanoic acid
Answer: (C) Butanol Butanol has the suffix ‘ol’, thus -OH is the functional group of the compound. Functional group Functional... View Article
An alkaline earth metal in period 3 is?
An alkaline earth metal in period 3 of the periodic table is Magnesium (Mg)
Draw electron dot representation for the formation of sodium oxide.
The electron dot representation for the formation of sodium oxide is given below:
Define hybridization.
Hybridization is defined as the concept of mixing two atomic orbitals with the same energy levels to give a degenerated... View Article
Cellulose is used to prepare: (A) Rayon (B)Nylon (C)Acrylic (D) None of these
Answer: (A) Rayon Cellulose is used to prepare Rayon. Cellulose is used mainly in paperboard and paper production. Smaller amounts... View Article
