Please select a subject first
Advertisements
Advertisements
Explain the following concept with an example.
Domestic violence
Concept: Domestic Violence
State whether the following statement is true or false with reasons.
Mobile addiction is only found among youth.
Concept: Addiction (Substance, Internet, Mobile)
Answer the following question in detail (in 150-200 words).
Describe the problems of ageing and suggest measures to solve them.
Concept: Measures to Tackle the Problems of Ageing
Read the following passage and answer the question based on it.
|
This is the real-life story of Rukmini Devi who lives in a small hut in Gaigotha Village in Wada Taluka of Palghar District in Maharashtra State. She belongs to the Warli tribe. Her husband is a marginal farmer who cultivates on two acres of land. They have two children, one daughter aged 10 years and a son aged 6 years. Both the children walk to school and back daily (located about 3 miles away). When cultivation season is over, (or if the rice crop is damaged due to heavy rains or pests) they face many hardships. A section of the crop is kept for their personal use, for the year. Tur Dal (lentil) is also grown in one small area, again for personal use. In a small backyard, they grow vegetables like chilies, cucumber, and bitter gourd (karela). During the off-season, both husband and wife go to the brick kilns (about 7 miles away) to do piece-rate work (That is, they get paid for each brick that they make). While the men earn Rs. 300 per day, the women earn Rs. 150-200. Rukmini Devi stated that they prefer to walk the 7 miles both ways because the bus fare is Rs. 35/- per head one way. They cannot afford it. |
- Identify any three problems that the family of Rukmini Devi has to face.
- Point out and discuss briefly, gender discrimination in this setting.
Concept: Passages
Iron (z=26) is highly ferromagnetic. Explain.
Concept: Properties of Solids: Magnetic Properties
Silver crystallises in FCC structure. If density of silver is 10.51 gcm-3, calculate the volume of unit cell. [Atomic mass of slive (Ag) = 108 gm-1]
Concept: Calculations Involving Unit Cell Dimensions
p - type semi-conductors are made by mixing silicon with impurities of ______.
Concept: Properties of Solids: Electrical Properties >> Applications of n-type and p-type Semiconductors
Explain impurity defect in stainless steel with diagram
Concept: Imperfections in Solids - Introduction
Niobium crystallises as body centred cube (BCC) and has density of 8.55 Kg / dm-3 . Calculate the attomic radius of niobium.
(Given : Atomic mass of niobium = 93).
Concept: Calculations Involving Unit Cell Dimensions
In a semiconductor, acceptor impurity is.................................
- antimony
- indium
- phosphorous
- arsenic
Concept: Properties of Solids: Electrical Properties >> Applications of n-type and p-type Semiconductors
The relation a ≠ b ≠ c and α ≠ β ≠ γ represents which crystal system?
(A) Orthorhombic
(B) Tetragonal
(C) Triclinic
(D) Monoclinic
Concept: Amorphous and Crystalline Solids
What is the hybridisation of carbon atom in diamond and graphite?
Concept: Amorphous and Crystalline Solids
The major binding force in diamond is_______________ .
(a) Covalent bond
(b) Ionic bond
(c) Metallic bond
(d) Co-ordinate covalent bond
Concept: Classification of Crystalline Solids
Describe triclinic crystal lattice with the help of a diagram.
Concept: Crystal Lattices and Unit Cells
A unit cell of iron crystal has edge length 288 pm and density 7.86 g.cm-3. Find the number of atoms per unit cell and type of the crystal lattice.
Given : Molar mass of iron = 56 g.mol-1; Avogadro's number NA = 6.022 x 1023.
Concept: Number of Atoms in a Unit Cell
What is the covalency of nitrogen in N2O5?
Concept: Classification of Crystalline Solids
What type of semiconductor is obtained when silicon is doped with boron?
Concept: Properties of Solids: Electrical Properties >> Applications of n-type and p-type Semiconductors
What type of magnetism is shown in the following alignment of magnetic moments?
Concept: Properties of Solids: Magnetic Properties
What type of point defect is produced when AgCl is doped with CdCl2?
Concept: Imperfections in Solids - Introduction
In body centred cubic structure the space occupied is about
(A) 68% (B) 53%
(C) 38% (D) 32%
Concept: Packing Efficiency >> Efficiency of Packing in Body-centred Cubic Structures
