Question

Q1 Which of the following cannot be decomposed easily
(a) molecule (b) compound (e)element
(d) Caco,
Q2 Slunt of length is
(a) Kilometer
(b) meter
(c) centimeter
(d) millimeter
Q3 Isotopes are having
(a)Same atomic number
(cdiferent number of Neutrons
(b) Same number of electrons
The chemical compound NH Clis
(a) organic (b) inorganic
compounds
(c) both a and
(d) never existing
25 Molecule is smallest particle of
(a) compound (b) substance
(c)mixture
(a) element
Q6 For a given principal level n= 4 the energy of its subshell is in the order
(a)s <d«p<t (b)s«p«d<1 (cdcfcpcs (dsp«i<d
An electron has principal quantum numer 3. The number of its sub-shell & orbitals​

Answer 1

Answer:

1.CaCO

Explanation:

2. metre

3. same no. of proton

4. inorganic

5. compound